Tom Elsesser wrote:
I am running a server with Centos 4.4, using a combo of sendmail-clamav-spamassassin for mail, which has been working quite well up until last night. Around 3:00am, all mail going to all users was being rejected by spamassassin. My ~/mail/.procmailrc is as follows: Oct 30 07:09:02 linux sendmail[20671]: k9UC8xCK020669: to=tom@acalprecision.com, delay=00:00:03, xdelay=00:00:02, mailer=local, pri=89726, dsn=5.1.1, stat=User unknown Oct 30 07:09:02 linux sendmail[20671]: k9UC8xCK020669: k9UC92CK020671: DSN: User unknown Oct 30 07:09:02 linux spamd[348]: prefork: child states: II
The key here is contained in the last three lines of the maillog. I've recently seen this behavior on one of the servers I maintain and it happened just after upgrading a CentOS 4.3 server to 4.4. The problem is the Sendmail update.
You have two choices:
1. Remove the current version of Sendmail and install the Sendmail packages that come with CentOS 4.3
2. Remove Sendmail altogether and install Postfix.
Clearly choice number one is easier and much less painful since you won't have to switch out your configuration files for SA, ClamAV or Sendmail.