Hi Info-Cyrus List Junkies,
We may be the last people on the planet using qmail as an MTA with Cyrus on Linux (current 2.2.3 from Simon's RPM with some custom patches on RedHat EL3.0. Thanks Simon!) I keep looking at other MTA's but we have lots of qmail experience, and it has been rock solid with no security issues. Performance has also been fine even with all the additional overhead of not using lmtp. (I sure wish single instance store was usable however.)
In the past have worked through a number of issues, including the sieve return address problem (qmail does not like the "<>" address Cyrus uses for sieve generated messages) and if anyone is interested, I could provide tips and info about what we do to have them coexist. We have been using this combo since Cyrus 1.6.
Everything works beautifully except for one known problem. Cyrus's internal mail storage format has line break of CR/LF just like SMTP. Qmail expects that any mail injected locally via qmail-inject or its sendmail replacement (which is just a wrapper around qmail-inject) will have LF line breaks only. Cyrus's sieve processing calls qmail's sendmail replacement in lmtpd.c and injects mail in the CRLF format which then causes qmail to corrupt the messages as it sends them outbound presumably by adding extra CR's.
The messages that emerge are not RFC compliant. Fortuantely, many MTA's accept them and fix the problem and many mail clients correctly display unfixed messages. Unfortunately, MS Outlook and Exchange server do not. Since this affects line breaks in the headers that Cyrus creates, the message often appear to the recipient with no apparent headers at all. AOL also rejects the messages at the MTA level.
It was a simple fix to hack lmtpd.c to fix all of the header issues by switching CRLF's to LF's, but I still would have to parse every buffer that cyrus uses to create messages to make the forward and autoreply features work correctly and produce truly RFC compliant messages. Before I either hack Cyrus further, or more likely go after qmail, has anyone else solved this problem? Is anyone else aware of this problem? Does anyone care? :-)
Thanks in advance, John ---------------------------------------- John Wade Director of Systems and Network Services Oakton Community College Des Plaines, IL
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