qmail stopped accepting mail

[KonstantinP]

Hello,

We using Plesk 8.0.1, several days ago qmail stopped accepting mail from any domain/mailbox. In mail logs we only see successful imap/pop3 logins and messages containing "relaylock":

Mar 26 21:43:42 server relaylock: /usr/local/psa/qmail/bin/relaylock: mail from 92.23.127.49:7327 (not defined)
Mar 26 21:43:43 server relaylock: /usr/local/psa/qmail/bin/relaylock: mail from 193.128.131.34:45577 (gate4034.smwebhost.com)
Mar 26 21:43:44 server relaylock: /usr/local/psa/qmail/bin/relaylock: mail from 74.125.82.52:61938 (mail-ww0-f52.google.com)
Mar 26 21:43:50 server relaylock: /usr/local/psa/qmail/bin/relaylock: mail from 94.181.51.174:1499 (net51.181.94-174.chel.ertelecom.ru)
Mar 26 21:43:59 server relaylock: /usr/local/psa/qmail/bin/relaylock: mail from 79.88.233.250:1316 (250.233.88-79.rev.gaoland.net)
Mar 26 21:44:05 server relaylock: /usr/local/psa/qmail/bin/relaylock: mail from 88.164.226.180:3837 (mar75-8-88-164-226-180.fbx.proxad.net)

When we try to send message we see the next:

$ telnet server.xx 25
Trying xx.xx.xx.xx...
Connected to server.xx.
Escape character is '^]'.
220 server.xx ESMTP
helo xxx
250 server.xx
mail from: test@xxxxx.xx
250 ok
rcpt to: test@server.xx
250 ok
data
354 go ahead
test
.
connect(): Connection refused
451 mail server temporarily rejected message (#4.3.0)


What is meant by "relaylock: /usr/local/psa/qmail/bin/relaylock"? What may be the problem with qmail?

 

[stefanb]

Did you manage to solve your problem? I'm having the same issue on Plesk 8.0 on FreeBSD 6.0 . Haven't changed anything recently except adding a domain for a friend. I tried deleting it but that did not help at all.

 

[KonstantinP]

We did not find out what was the problem. It was fixed after server reboot (Plesk or qmail restart did not help). Later we found spammer on server, problem may be related with it.

 

[stefanb]

Hello Konstantin,

A reboot fixed it for me too. Weird though. Good that it is still 7AM so it did not cause much damage. Thanks for the quick reply

regards