Web Hosting Talk : Web Hosting Main Forums : Hosting Security and Technology : QMAIL Problem (451 qq temporary problem (#4.3.0))

[lachtan]

HI I have problem with outgoing mails, spam and virus checking for incoming mail is ok, but if I enable QMAILQUEUE in start script, i can`t send any message, i see this err:

451 qq temporary problem (#4.3.0)

Any Ideas ?

[Inthrive]

You didn't specify, so I'm assuming you're using qmail, qmail-scanner, spamassassin and clamAV. What is your softlimit set to in the qmail-smtpd run file? (typically located at /var/qmail/supervise/qmail-smtpd/run or /var/qmail/supervise/smtp/run) is should be 40MB (40000000) or more. Make sure spamd is running - "ps aux | grep spamd". Check /var/log/maillog and /var/spool/qmailscan/qmail-queue.log and /var/log/qmail/qmail-smtpd/current for a more specific error description. Make sure setuid is enabled in perl and that perl is up to date.

See http://nospam.mine.nu/setuid.shtml
http://qmail-scanner.sourceforge.net/
http://nospam.mine.nu/qq.shtml

You must increase the amount of memory your system allows qmail-smtpd to run with, as it it now running the entire perl interpreter PLUS virus scanners. Typical installs of Qmail have system rc/startup scripts (e.g. /etc/rc.d/init.d/qmail or /service/smtp/run) that limit the amount of RAM qmail-smtpd can use via ulimit or softlimit. You must increase that to around 5-11Mb (totally dependent on your OS and choice of anti-virus scanner). If you don't qmail-smtpd will crash with a "qq" error on the receipt of the very first message... The actual amount is dependent on the OS in question as well as the virus scanners being used, so be prepared to experiment a little. Whatever you do, don't just set it to something stupid like 100M "just to be sure". The whole point about limiting RAM usage is so that "unusual" mail messages (e.g. from spammers or hackers) can't cause your system to become unusable by making it run out of RAM.

[lachtan]

My problem is probably in perl setuid, there is solution for this on qmailrocks.org. I`am using debian, and there is good HOWTO for Debian.