Mail stuck in the queue

[kram@]

Hello All,

I am struggling with mail just siting in the queue.
from the PLESK mail sever settings tab i see

Messages in queue: 63 deferred, 0 held, 0 incoming, 0 active, 0 corrupted, 63 total.

When i run kill -ALRM `ps ax | grep qmail-send | grep -v grep | awk '{print $1}'`

I get these messages ion the maillog.

Oct 6 02:11:46 webhost qmail: 1254787906.157151 delivery 1772: deferral: Sorry,_I_wasn't_able_to_establish_an_SMTP_connection._(#4.4.1)/
Oct 6 02:11:46 webhost qmail: 1254787906.157184 status: local 0/10 remote 21/50
Oct 6 02:11:46 webhost qmail: 1254787906.229049 delivery 1703: deferral: Connected_to_196.34.191.132_but_connection_died._(#4.4.2)/
Oct 6 02:11:46 webhost qmail: 1254787906.229079 status: local 0/10 remote 20/50
Oct 6 02:11:46 webhost qmail: 1254787906.238054 delivery 1707: deferral: Connected_to_196.23.143.5_but_connection_died._(#4.4.2)/
Oct 6 02:11:46 webhost qmail: 1254787906.238079 status: local 0/10 remote 19/50
Oct 6 02:11:46 webhost qmail: 1254787906.395955 delivery 1720: deferral: Connected_to_196.34.191.132_but_connection_died._(#4.4.2)/
Oct 6 02:11:46 webhost qmail: 1254787906.395985 status: local 0/10 remote 18/50
Oct 6 02:11:46 webhost qmail: 1254787906.401989 delivery 1768: deferral: Sorry,_I_wasn't_able_to_establish_an_SMTP_connection._(#4.4.1)/

Any help will be great.

 

[Nataliya Zagr]

Hello,

It looks like you have connection problem with your SMTP server, please, perform the following steps to find a reason:

- Make sure that you use right IP address and port number combination for SMTP server in your mail client preferences. If you use domain name instead of mail server IP, make sure that the domain is resolved to right IP, see follwoing article:

http://kb.odin.com/en/765

- Check if Parallels Plesk SMTP service is running on the server, see the following article for more information:

http://kb.odin.com/en/1387

- If SMTP service works on the server, but you still cannot connect to it to send mail, most probably the reason is in firewall. Try to stop firewall on the Plesk server if it is running and try to send mail again. If it doesn't work, then SMTP port is blocked somewhere in your net, please check it and ask you ISP about 25 port filtering.

Thank you

 

[kram@]

Solved

It turns out that the reason for these error messages is because the server is been blocked by remote servers running IronPort - Senderbase.

The reason for the poor senderbase status, is another story altogether.