So, i set the mail forward on ISP config, to forward to my others email. Previously i disabled it, but just now i enabled it, and then i saw so much mail queue. in just a minutes, there was 2122 messages in queue do some research, i got keyword "postcat" here some info: Expand: Mail que Code: 4911020618 12019 Sun Jun 10 00:00:00 [email protected] (delivery temporarily suspended: lost connection with mx2.qq.com[184.105.206.32] while performing the HELO handshake) [email protected] 4B07A20B32 12047 Sun Jun 10 19:57:12 [email protected] (delivery temporarily suspended: lost connection with mx2.qq.com[103.7.30.40] while performing the HELO handshake) [email protected] 457E520594 12230 Sat Jun 9 22:47:19 [email protected] (delivery temporarily suspended: lost connection with mx2.qq.com[184.105.206.32] while performing the HELO handshake) [email protected] 4C9EA203E2 12028 Sat Jun 9 20:35:35 [email protected] (delivery temporarily suspended: lost connection with mx2.qq.com[184.105.206.31] while performing the HELO handshake) [email protected] 4C21620792 11612 Sun Jun 10 03:50:07 [email protected] (delivery temporarily suspended: lost connection with mx2.qq.com[184.105.206.32] while performing the HELO handshake) [email protected] 462ED20683 12219 Sun Jun 10 01:03:05 [email protected] (delivery temporarily suspended: lost connection with mx2.qq.com[184.105.206.32] while performing the HELO handshake) [email protected] 417652085A 13038 Sun Jun 10 05:50:12 [email protected] (delivery temporarily suspended: lost connection with mx2.qq.com[184.105.206.32] while performing the HELO handshake) [email protected] -- 25054 Kbytes in 2122 Requests. root@server:~# postcat /var/spool/postfix/deferred/A/417652085A postcat: fatal: open /var/spool/postfix/deferred/A/417652085A: No such file or directory root@server:~# postcat /var/spool/postfix/deferred/A/4B07A20B32 postcat: fatal: open /var/spool/postfix/deferred/A/4B07A20B32: No such file or directory root@server:~# postsuper -d ALL postsuper: Deleted: 2122 messages root@server:~# i don't know what's happened on my server i already set Spamfilter Users domain to Normal any suggestion?
Can be many reasons: infected site, you are blacklisted, misconfiguration of postfix, etc. Check your external IP for blacklist on specialized sites. Try to see if any sites are sending emails cause I see a lot of webmaster@... in your log, review Postfix configuration....
