Download: http://www.courier-mta.org/download.php

New releases of the following packages:

courier-authlib 0.55 courier 0.49.0 courier-imap 4.0.2 sqwebmail 5.0.1

See the appropriate section, below:

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courier-authlib 0.55

• Fixed a symbol conflict with RHAS4

• Implemented SASL CRAM-SHA256

• Fix to authsystem.passwd script - explicitly set locale to en_US.

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Courier 0.49.0

The term "backscatter" refers to non-delivery reports sent to a forged return address. SMTP was created a long time ago, in better times where everyone trusted each other. Anyone could use any return address on an E-mail message. It's rather obvious how this can be a problem in modern times.

Backscatter becomes a problem when a mail server does not refuse to accept unwanted mail. The mail server decides that the message is unwanted only after it is accepted, and generates a non-delivery notice, which is sent to the original message's return address. Viruses and junk mail use randomly forged return addresses, so the victim of address forgery gets further burdened with having to dig out massive amounts of useless non-delivery notices from the mailbox.

This release of Courier adds several settings that help with stopping the backscatter coming out of Courier.

Changes:

• opt BOFHCHECKHELO=2 makes HELO rejections a temporary error code.

• Several new settings that control generation of backscatter bounces. See new documentation in INSTALL. New command "courier clear address".

• When upgrading to this version of Courier, be sure to review "Backscatter suppression", in INSTALL.

• With quotas enabled, a full maildir is now a temporary error, not a permanent one. This configuration works better with backscatter filters.

• Documentation typos fixed. Minor error message tweaks.

• Open control files in append mode.

• Include message size in the 523 error message.

• Mail was always filtered using global mail filters (if installed), even if its source was not listed in the enablefiltering configuration file. Change that: filter the mail only if its source is listed in enablefiltering.

• Update webmail configuration in webadmin to use courier-authlib's settings (some webmail configuration settings broke in 0.48.0).

• Fix symbol conflicts with RHAS4

• portability fixes to several shell scripts

• Courier-authlib 0.55 required

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Courier-IMAP 4.0.2

This is an errata release that fixes several portability fixes.

• Fix symbol conflicts with RHAS4

• portability fixes to several shell scripts

• README.proxy was getting clobbered by make clean.

• Courier-authlib 0.55 required

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SqWebMail 5.0.1

This is an errata release that fixes several portability issues.

• Fix symbol conflicts with RHAS4

• portability fixes to several shell scripts

• Makefile.am: Remove obsolete installation of the nodsn config file.

• Courier-authlib 0.55 required