OT: unable to open port 25 on remote servers
Hi all,
I realise this is OT but the mailserver I'm running is built on woody,
and this list has been very helpful in the past so...
I am running a postfix mailserver on debian woody.
I am also running several other woody machines on the same network.
I am getting complaints from users that outgoing emails to several
domains are bouncing with "unable to connect".
For each primary MX in each of the recipients' domains that have a
problem, I try telnet to port 25.
This is where it gets really weird: it works from some of the woody
machines on the network, and not from others. The machines are all on
the same physical network, and in the same /24 IP subnet.
On the machines where it doesn't work, nothing is returned. netstat -n
shows SYN_SENT, and that is as far as the connection goes.
All machines run woody.
Has anyone else had similar problems?
--
Best regards,
| George Karaolides Planitis Communications Ltd.,
|
| tel: +357 22 45 65 00 Office 102, 11 Florinis Street,
|
| web: www.planitis.net Nicosia CY 1065,
|
| email: george.karaolides@planitis.net Republic of Cyprus.
|
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