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Courier Mail Server Changelog

What's new in Courier Mail Server 3.07

Nov 29, 2016
  • Support for secure connections (SSL/TLS) in SMTP and POP3 services (in connecting mode to the standard port).
  • Check box "Reject duplicate messages" in the properties of external mailbox.
  • In the SMTP service added the ability to reject messages of clients who have not passed the hostname (PTR record) check, that allows to record in the log the addresses of senders and recipients of these messages.
  • In the SMTP service added the ability to check the coincidence of the client hostname passed by the EHLO command, with its name specified in the PTR record.
  • In the SMTP service added the ability to disable the check resolve the client hostname into its IP address, that allows to check only the very existence of a hostname (PTR record).
  • In the services added a separate limit of the number of simultaneous connections per IP address for the group of allowed IP addresses.
  • In the conditions of sorter and antispam now can be used temporary field ToCc (concatenation of fields To and Cc, separated by comma).
  • Possibility to specify multiple message recipients in the properties of an external mailbox on "Recipients" tab.
  • In "Remote Messages" section the "Created" column with a creation date of the message added to the list.
  • If the client sent more recipients by the RCPT TO commands, than specified by the setting "Max. number of message recipients" then now not only recipients over specified number are rejected, but also the message itself.
  • Now, when the authentication commands are recorded to the log, all open passwords (including encoded in base64) are replaced by asterisks and user names are recorded in the clear.
  • Services in which the protocol provides the server response immediately after the client connection (SMTP, POP3 and WinAdmin), when a connection is prohibited, before disconnecting a client send to it the reason for disconnection. Other services (HTTP, SOCKS) disconnect a client without sending the reason to it. Also, all services when a connection is prohibited are now record the reason of disconnection to the log.
  • Previously was not taken into account the situation when the antivirus deleted the message file (or moved it to the quarantine), so further processing of the message was interrupted with an EFOpenError error. Now, in this situation, the message processing is completed correctly and the corresponding report is recorded to the log.
  • The range of horizontal scrolling of the screen log is now dynamically updated when adding new rows.
  • Small reorganization of settings: "Access" tab in the properties of services, columns of the list in "Remote Messages" section.
  • While at least one connection to the service from a certain IP address was established, all subsequent connections from the same IP address were not checked for violations.
  • In the POP3 client when using protection of connection (SSL/TLS) with connection to the standard port, APOP authentication method was not working.
  • If at the end of a session of receiving mail from the remote mailbox a connection to a remote server was interrupted, then the messages which should be removed from the mailbox, in the next session were not deleted and received again.
  • The IMAP client requested a list of message identifiers even if the remote mailbox was empty, that caused an error message from the remote server.
  • The IMAP client tried to continue the authentication process after receiving a failure on the AUTHENTICATE command from a remote server, which led to hanging connection and its further interruption by timeout.

New in Courier Mail Server 3.06 (Nov 29, 2016)

  • Implemented IMAP client that allows to receive mail from remote mailboxes using IMAP protocol.
  • The option to install only the console has been added to the installer.
  • The installer allows to start the server without installing it as a service.
  • Each logged on user can now run his own copy of the monitor.
  • Timeout, specified in the properties of services and remote servers is now used not only when receiving, but also when sending data. This avoids long hung connections.
  • Excluded the situations where sending is started after accumulating a threshold number of messages in the queue and some messages are not sent.
  • If the connection to the server is interrupted, the console is now informs immediately about it and closes the connection from its side.
  • Now while the administrator works in the console it is not disconnected from the server. Disconnection occurs only if the console is not used for a timeout specified for WinAdmin service.
  • The transfer of messages from local mailboxes by the POP3 service has been accelerated.
  • When starting of receiving mail from the group of remote mailboxes always the specified maximum number of receiving threads was started. Now server starts as many threads as there are active mailboxes in the group (but not more than the specified maximum and not less than 1).
  • Windows 2012/8/8.1/10 were added to the list of supported OS.
  • Small improvements and the fixes of minor errors in the monitor and console.
  • When a rule with selected check box "only for these recipients" was being executed in a nested sorter, actions could be performed also for recipients who are not satisfying the condition.
  • If the server was installed as a service, and the monitor was started with user rights, it was impossible to open the option window of the monitor or start the server, there was the error "System Error. Code: 5. Access is denied".
  • In the case when the server was running as a service, and the monitor was started with user rights, and also in the case when the server was running as an application, and the monitor was started in the session of another user, the server status was displayed as stopped.
  • Function "Send spam to this address" did not work for remote mailboxes, in the properties of which the check boxes "Use this internal antispam" and "Use external antispam" had been cleared - the messages detected as the spam were being deleted.
  • Installing CMS on the version 1.xx was being interrupted with the error "Table "WebSites" not found".

New in Courier Mail Server 3.05 (Jun 8, 2015)

  • Support for secure connections (SSL/TLS) with remote SMTP and POP3 servers, including the MX delivery.
  • The check box "Require authentication" in the properties of a web site, that allows to deny access to site for users who are not registered in the CMS.
  • The system of counting violations of clients was extended to the HTTP service. Violations are: the authentication failure, the sending of an unrecognized command.
  • To the violations of SOCKS service were added the following: the sending of an unrecognized command, the using of an unsupported protocol version.
  • Improved display of the message lists: width of the column "Subject" ("Remote Messages") was fixed, the column "Size" ("Remote Messages", "Sending Tasks") was aligned to right.
  • Field "Root folder" in the properties of HTTP service was replaced by field "Main site" on tab "Sites". Main site opens as with explicit reference to it, and if the site is not specified in request or specified a nonexistent site.
  • IP address of the remote SMTP server in the MX delivery now is requested immediately before connecting to it, which reduces the number of requests to DNS.
  • Small improvements and correction of defects in the server and console.

New in Courier Mail Server 3.04 (Nov 21, 2014)

  • Displaying port of POP3 server has been added in the list of remote mailboxes.
  • Message processing by antispam and sorter with a large number of rules has been significantly accelerated.
  • Displaying lists with a large number of records has been accelerated.
  • When executing an external application (in the antivirus and scheduler) was not being taken into account the situation when the exit code was not obtained (no executable file, no rights to run it and others). As a result, some random value was being taken as a code.
  • If one or more messages were being refused by antispam when receiving mail from a remote mailbox, all messages received later in the same session and intended for re-receiving, were being directed to the spam recipient instead the recipients of these messages.
  • In the log message "Notification created..." an empty sender address was always being displayed ("from "), even for non-service notifications. Now for such notifications the e-mail address of the sender from the notification template is displayed.

New in Courier Mail Server 3.03 (Aug 21, 2014)

  • Corruption of file state.cfg now almost impossible.
  • System of counting the violations of clients is developed. When the specified number of violations is reached, access to the service is denied for client on a certain time. Violations are: the authentication failure, the sending of an unrecognized command.
  • Added:
  • Possibility to send not only the service notifications, but also the notifications as regular messages from a specific sender.
  • Possibility to create notifications of messages, the sending which is delayed by a certain time.
  • Possibility to alternate the "black" and "white" rules of antispam in arbitrary order. Explicit support of special rule "External conditions" (checking of allowed addresses and starting an external antispam).
  • Changes:
  • In the lists of rules of antispam and sorter, new rule is now added after the selected one, but not at the end of the list. If no rule is selected, a new rule is added to the top of the list.
  • If the check box "Require authentication of local senders" in the domain properties is cleared, the SMTP service now accepts messages also from nonexistent users of this domain.
  • When a client connects to the service, now limit on the number of simultaneous connections is checked first, and then if the limit is not exceeded, the remaining checks of client are performed.
  • If when the client connects to the service, there are established connections to the same service from the IP address of the client and the maximum number of simultaneous connections is not reached, then this client is allowed access to the service without any additional checks. Thereby the simultaneous connections from the same IP address are accelerating.
  • The order of use the DNS-servers when repeating of the request changed from 1-1-2-2 to 1-2-1-2.
  • If the response from the specified DNS servers is not received, the unnecessary requests of the authoritative DNS servers now are not performed.
  • When the DNS server returns a response "domain does not exist" the repeating of the request now is not performed.
  • In the properties of a notification template "From" field is divided into two fields: "From, name" and "From, e-mail address".
  • Removed support for antivirus "Kaspersky Anti-Virus v4.x" as obsolete and not supported by the developer.
  • Removed the action "Disinfect" in the antivirus, because the disinfection is specified by the key of command line of antivirus.
  • Small improvements, fixes of minor errors and defects in the server (services and others), console (lists and others) and installer.
  • Bugfix: Installing CMS on the version 1.xx containing remote mailboxes was interrupted with an error "Field "RemoteMailboxes.UseAntispamTOP" not found".

New in Courier Mail Server 3.02 (Sep 19, 2013)

  • The list of antispams. Each of external mailboxes and SMTP service can have its own internal antispam.
  • The antispam rules can be moved through the list. The rules are checked in the order they are listed.
  • Selection of the send queue added to the "Sending Tasks". The list displays the tasks only from the selected queue.
  • The number of tasks in the list and their total size are displayed in the "Sending Tasks".
  • Support for Perl in the web server.
  • Property of the web server "Address of error 404 page".
  • Small improvements and the fixes of minor bugs in the console.
  • Small improvements of the web server in the transfer the name and version of the server to the script interpreter and to the client.
  • Installing CMS on the previous version with default configuration was interrupted with error "Field "Services.AllowUnsecureAuth" not found".
  • In some cases, the total size of messages in the "Remote Messages" was calculated incorrectly.
  • When requesting a folder without the default files, the web server readdressed the client to the same folder instead of returning error "404 Not Found". As a result, the client browser repeatedly requested the same folder as long as it did not detect loops.
  • The web server processed the files with a name without an extension as PHP scripts.

New in Courier Mail Server 3.01 (Apr 26, 2013)

  • Additional anti-spam checks of clients in SMTP service: the existence of PTR record, the matching of the A and PTR records, the matching of the host name with the pattern of the forbidden names.
  • Feature of binding the mail sending with a specific IP address.
  • Small reorganization of settings: tab "Access" in the properties of services, tab "General" in section "Sending".
  • The optimizations, fixes of some minor errors and defects of the converter configuration in the setup are performed.
  • When installing CMS administrator password is immediately encrypted.
  • When updating from CMS 1.xx all passwords are immediately encrypted.
  • All unencrypted passwords stored in the configuration file are encrypted during the first saving the configuration.
  • If access to POP3 service has been allowed for all then after updating from previous versions, the console could not connect to the server.

New in Courier Mail Server 2.12 (Nov 26, 2012)

  • The log message about creation of the notification about undelivered message now contains the list of recipient addresses, to which message is failed to deliver.
  • The log message about a nonexistent domain now contains name of this domain.
  • If a remote SMTP server unexpectedly disconnected when receiving a message, the CMS tried to send following messages from a queue via the same connection, that caused an error "Invalid socket (10038)". As a result, there were delays with sending mail.
  • If check box "Recipients" of the notification template about the virus is selected, then when creating such notification for messages with several recipients one incorrect address (which is composed of the several addresses) is added to notification instead of recipient addresses. As a result, the notification about the virus is not delivered to recipients of the original message.
  • If an alternative type of sending was the sending on the list, when it is performed, domains of some message recipients are determined incorrectly. As a result, the alternative sending for some messages could be performed without performing the main one (MX-delivery).
  • If a remote SMTP server unexpectedly disconnected when receiving a message, then the command that is sent before disconnecting is not included in the sending log, that is added to the notification about undelivered message, and note about disconnection is not located on a separate line.
  • When creating a notification about the virus, the value of the macro Recipients always been an empty string. Now the macro contains a list of recipient addresses of the original message.

New in Courier Mail Server 2.11 (Jan 4, 2012)

  • When processing event "the starting of scheduler task from a sorting rule" check box "Attach original message" of the corresponding template is used, that allows when sorting attach the processed message to the notification.
  • Field "Extensions of files containing PHP scripts" in HTTP service.
  • In a sorting rule, condition "external recipients" now corresponds to external and nonexistent local recipients, and condition "local recipients" corresponds to the existent local recipients and aliases. Previously, the first condition corresponded only to external recipients, and the second one corresponded to any local (existing, nonexistent and aliases).
  • Now, aliases also are extracted from message headers, in addition to local e-mail addresses.
  • The Web server did not decode in requested URL the characters presented by the hexadecimal codes ("%XX"), that caused an error "404 Not Found".
  • When switching the check boxes on tab "Recipients" in the properties of external mailbox, a state of check boxes "only if there are no recipients" was changed incorrectly.

New in Courier Mail Server 2.10 (Oct 20, 2011)

  • When some errors of string decoding were occurring, the process of the mail receiving was interrupted. (The error has appeared in CMS 2.09).
  • Fields of the message headers, containing empty Quoted-printable strings were not decoded; the error "'$=?' is not a valid integer value" was occurring.
  • The column "ID" in the list of the sorting rules was empty. (The error has appeared in CMS 2.09).
  • Errors at reading the configuration file converted from CMS 1.5x.

New in Courier Mail Server 2.09 (Oct 20, 2011)

  • The "Actions" column is added to the list of the sorting rules.
  • The US-ASCII encoding table is added.
  • Aliases of the encoding tables are supported (for example: Windows-1251 = CP1251, CP-1251, X-CP1251, X-CP-1251).
  • Decoding of the strings consisting of several encoded parts, separated by spaces, is improved.
  • Extraction of e-mail addresses from message headers is improved.
  • The service property "Start service when IP address/port is occupied" is deleted. Now the IP address/port is always opened in exclusive mode, hereby not allowing to harmful application to capture it (so-called "socket hijacking") and to intercept the client connections.
  • Strings in encoding UTF-8, consisting of several parts were decoded incorrectly.
  • The name of the attached file for X-Attach-Filename field was not extracted, if Content-Disposition field was not containing the "filename" parameter. Now in such cases the file name will be extracted from the "name" parameter of Content-Type field.
  • The sorter was hanging up at check of incorrectly specified conditions.
  • The command line parameters of antivirus could not contain the characters ":" and "\".
  • When message was refused by antispam on allowed recipient addresses (To, Cc), only the rule for the last address of the list was written to the log.

New in Courier Mail Server 2.08 (Feb 1, 2010)

  • The interface of interaction with external antispam by means of loading the DLL library.
  • The check box "Wait for termination" in properties of the sorting rule, allowing suspend the sorting for execution time of task.
  • For personal authentication on external SMTP server, external e-mail address assigned in user properties is used.
  • In process of sorting, message file can be deleted by scheduler task - this situation is processed correctly, the server will delete the remained inf file and will terminate message processing.
  • The macro Recipients (recipients of processed message) is added to event "the starting of scheduler task from a sorting rule".
  • The decoding of incorrect Quoted-printable strings in coding UTF-8 is improved.
  • The antispam parameters for external mailboxes are changed and moved from "Processing/Antispam" tab to the properties of external mailboxes.
  • The "Processing/Application" tab is deleted. Specified there actions are now specified by means of the sorting rules.
  • The format of some log messages has changed.
  • Message headers containing lines of 512 and more characters long were damaged.
  • If DNS server returned recursive chain of aliases (because of incorrect configuration of corresponding DNS zone), DNS client was looped.
  • If message not had a text part, name of the attached file for X-Attach-Filename field was not extracted.
  • If name of the attached file contained the ";" character then only part of name till this character was extracted for field X-Attach-Filename.
  • Other errors and defects.

New in Courier Mail Server 2.07 (Nov 28, 2009)

  • Possibility to send the external mail to SMTP servers requiring that sender address coincided with name of authenticated user.
  • Possibility to automatically send message to SMTP servers on list, if MX delivery of it is failed, conversely.
  • Functional possibilities of sorter are extended: the checking and the filtering the message recipients, additional actions (delete, add all recipients of a domain, store to a queue, direct to sorter).
  • Regular expressions in the conditions of sorter and antispam.
  • Viewing of the list of messages accomodating in remote mailboxes, with feature of the repeated receipt or removing the selected messages.
  • The subjects of messages are displayed in "Sending Tasks".
  • Sending of messages in order of increasing their sizes.
  • The main sorter processing all passing messages regardless of the way of their receipt (SMTP/POP3/notification).
  • Possibility of specify the priority of the operations in the conditions of sorter and antispam by means of parentheses.
  • The value of field "Consider message as undelivered after" now can be specified both at hours and at minutes.
  • Web server supports the multiple sites.
  • The macros RecvDateTime, Size and FileName (data of processed message) are added to event "the starting of scheduler task from a sorting rule".
  • The macro Log (the fragment of the log of message sending) is added to event "message is not delivered because time of sending has expired".
  • The encoding tables is added: ISO-8859-1, ISO-8859-3, ISO-8859-4, ISO-8859-6, ISO-8859-8, ISO-8859-9, ISO-8859-11, ISO-8859-13.
  • Field "E-mail address" in properties of remote mailboxes.
  • Replacement of the addresses of local users by their external addresses is now performed in all fields of the message header, except of fields Message-ID, Subject, In-Reply-To, References. Also now all the found local addresses, for which replacement is enabled, are replaced, rather then only the sender address. The finding the e-mail addresses for replacement is improved.
  • Sorter property "Send unsorted messages to this address" is deleted. This action is now specified by means of a sorting rule.
  • In field "If server did not respond, do not connect to it for" in properties of the sending is now specified not list, but one value.
  • The format of some log messages has changed and additional information is added to them.
  • The format of the macro value UndeliveredHours is changed from "hh" to "hh:mm".
  • Macro Condition (a met condition) is removed from event "the starting of scheduler task from a sorting rule".
  • The encoding tables is renamed: IBM866 to CP866, X-MAC-CYRILLIC to MACCYRILLIC.
  • When receiving the mail from remote mailbox, error "Access violation at address 004D29F6" is sometimes occurred, with the result that the next starting the task of the receipt was impossible till the server restart.
  • If in remote mailbox was selected only the check box "Extract local recipients from these headers", then spam did not send to the specified address ("Send spam to this address"), but was delivered to this local recipients.
  • The local address of message sender was not replaced by its external address, if local address was located not at the first line of a field of message header.
  • In Windows Vista when the attempts of the RAS connecting are exhausted, the disorderly close-down of server occurred.
  • When stopping the services manually, the error "Access violation at address 004AD637" sometimes occurred.
  • The fixes of errors and optimization of DNS client are performed.
  • Errors in the encoding tables: ISO-8859-5 (codes for letters "YO" and "yo"), ISO-8859-7.
  • Quite a number of errors and defects of the user interface.

New in Courier Mail Server 2.06 (May 8, 2008)

  • The system of generating the notification messages, when certain events are occured (message is not delivered, virus found, etc.), is developed. Notifications are created on the specified templates with macros using.
  • The start the scheduler tasks from the sorting rules.
  • A scheduler task can create the certain notification.
  • The possibility to limit the maximum sizes of the local mailboxes.
  • If some inf file (*.inf) is absent or corrupted then a corresponding record with specifying the file name is added to the log, and message, to which this inf file pertains, is ignored.
  • The support of the coding UTF-8 in the conditions of the sorting and filtering the messages.
  • If when connecting to remote SMTP or POP3 server a request of IP address of this server is failed (for example, if list of DNS servers is empty), then connection through SOCKS server is established (if it is allowed).
  • The macros from notification templates can be used in the properties of a scheduler task in fields "Run this application" and "Continue execution if this file exists".
  • After execution an external application in a scheduler task the ExitCode macro with the exit code of the application is added to the macro list. If check box "Wait for termination" is not selected macro is not added.
  • The Web server property "Default files" allowing to specify own file list by default. For example: "index.*;*.php".
  • The check box "Allow execution of several task copies" in the properties of a scheduler task.
  • The possibility of the temporary disabling the rules of the sorter and antispam.
  • The "Description" field in the rules of the sorter and antispam.
  • Processing of the message list is greatly speeded up and processor usage is reduced, when receiving the mail from external mailboxes.
  • Sorting on the message sizes is speeded up in function "Receive the short messages first" of external mailboxes and the volume of the incoming traffic is reduced.
  • Initial and final spaces in a condition string were ignored when checking the rules of the sorter/antispam. For example, the condition Field:" string " was checked as Field:"string" (without spaces).
  • If server worked as service, then after user logoff the Windows and then logon again, the user interface sometimes began to work incorrectly.
  • If remote server unexpectedly disconnected when executing a DNS request then the next repetitions of the request caused the error "Winsock error (10038)".
  • The server could be not stopped while a external application started by a scheduler task was executed even though the check box "Wait for termination" was cleared.
  • The negative exit codes in the Command Line Antivirus were processed incorrectly.
  • The new messages in external mailbox were ignored if identifiers (UIDL) of a new and an earlier received messages differed only by letter case.
  • The server did not start under the wrong type of parameter Content Type in the Windows registry; the error "Invalid data type for 'Content Type'" was written to the log.
  • A RAS connection could be not added or changed in the Windows Vista. The error "An incorrect structure size was detected. (632)" was written to the log.
  • The error "System Error. Code: 87. The parameter is incorrect" sometimes occurred when executing the PHP scripts in the Windows Vista.