Ip blocked but where?

[SalvadorS]

Ip blocked but where? (FIXED)

Hello,

Debian 6.0.7, Plesk 11.0.9 MU60

I have a client who can´t send mail to a domain:

Mar 10 07:43:03 server postfix/smtp[5709]: C2E4E436368: to=<user@domain.com>, relay=none, delay=71919, delays=71897/0/21/0, dsn=4.4.1, status=deferred (connect to domain.com[x.x.x.x]:25: Connection timed out)

If I ping that IP form the server there is no answer. If I ping the IP form another server all is correct. So it seems that the ip is blocked in my server. But the problem is that is not blocked in the IP tables (iptables -L -n don´t show the IP) also is not blocked in host.deny and I don´t use (as far I know) the plesk firewall.

Any clues from where the IP is blocked or how to unblock it?

UPDATE: The IP was not blocked on my server. Thanks in advance for the help. An admin can close/delete this post.

Thanks

 

[Shanats]

Not sure i follow exactly which server to which server you pinged, but do you have a firewall installed?

What are your server specification, as in which OS etc.

Hello,

Debian 6.0.7, Plesk 11.0.9 MU60

I have a client who can´t send mail to a domain:

Mar 10 07:43:03 server postfix/smtp[5709]: C2E4E436368: to=<user@domain.com>, relay=none, delay=71919, delays=71897/0/21/0, dsn=4.4.1, status=deferred (connect to domain.com[x.x.x.x]:25: Connection timed out)

If I ping that IP form the server there is no answer. If I ping the IP form another server all is correct. So it seems that the ip is blocked in my server. But the problem is that is not blocked in the IP tables (iptables -L -n don´t show the IP) also is not blocked in host.deny and I don´t use (as far I know) the plesk firewall.

Any clues from where the IP is blocked or how to unblock it?

Thanks

 

[SalvadorS]

Hello Shanats,

This is fixed. Regards