It looks to me like one of my mail servers is getting bombarded with incoming connections. It is causing MailScanner and db-mail and postfix to fail due to the overwhelming connections coming.
This is a mail server that has very low traffic so I am not sure what is happening. It has been fine for months and months and then today this is what I am seeing in my /var/log/maillog Feb 10 10:42:22 mail postfix/smtpd[5439]: connect from austtx-mx-04.mgw.rr.com[24.93.40.211] Feb 10 10:42:25 mail postfix/smtpd[5440]: connect from hrndva-mx-04.mgw.rr.com[24.28.204.23] Feb 10 10:42:25 mail postfix/smtpd[5442]: connect from clmboh-mx-02.mgw.rr.com[65.24.7.11] Feb 10 10:42:26 mail postfix/smtpd[5444]: connect from mail1.dynavax.com[63.202.217.164] Feb 10 10:42:26 mail postfix/smtpd[5443]: connect from ata.attmil.ne.jp[165.76.4.117] Feb 10 10:42:27 mail postfix/smtpd[5445]: connect from gumby.apid.com[63.238.52.8] Feb 10 10:42:29 mail postfix/smtpd[5446]: connect from im.cliffordlaw.com[12.160.0.42] Feb 10 10:42:30 mail postfix/smtpd[5441]: connect from clmboh-mx-04.mgw.rr.com[65.24.7.13] Lots of these, and then tonnes of errors from postfix. Feb 10 10:42:40 mail postfix/smtpd[5447]: warning: premature end-of-input on private/rewrite socket while reading input attribute name Feb 10 10:42:40 mail postfix/smtpd[5447]: warning: problem talking to service rewrite: Success Feb 10 10:42:40 mail postfix/master[5011]: warning: process /usr/libexec/postfix/trivial-rewrite pid 5583 exit status 1 Feb 10 10:42:39 mail postfix/smtpd[5059]: warning: premature end-of-input on private/rewrite socket while reading input attribute name Feb 10 10:42:39 mail postfix/trivial-rewrite[5580]: fatal: mysql:/etc/postfix/relaydomain.cf(0,100): table lookup problem Feb 10 10:42:39 mail postfix/smtpd[5045]: warning: premature end-of-input on private/rewrite socket while reading input attribute name Feb 10 10:42:39 mail postfix/smtpd[5047]: warning: problem talking to service rewrite: Connection reset by peer Feb 10 10:42:39 mail postfix/smtpd[5042]: warning: premature end-of-input on private/rewrite socket while reading input attribute name Feb 10 10:42:39 mail postfix/smtpd[5041]: warning: problem talking to service rewrite: Success Feb 10 10:42:39 mail postfix/smtpd[5043]: warning: problem talking to service rewrite: Connection reset by peer I know why the error about the table lookup is happening and that's because I've exceeded my conneciton limit to MySQL which is set at 100. I think this is because of the constant incoming connections. I really need some help here.... Bryan
