Scott Kitterman wrote:
On Tue, 29 Jul 2008 14:59:25 +0100 Evan Ingram <[EMAIL PROTECTED]>
wrote:
On Tue, 2008-07-29 at 15:46 +0200, mouss wrote:
some sites drop traffic from residential blocks, which could explain why
you cannot connect.
Hmmm That would make sense. But what about the other machines I have
here being able to connect to the problem mail servers via telnet etc
but my mail server cannot? :/
These restrictions are generally limited to port 25. Are you able to
telnet from other machines on port 25?
and if so, what OS are they running? if with the same public IP, you can
connect from old OSes (such as windows XP) but not from recent
linux/bsd/..., then it may be a firewall or nat box bug (tcp window
scaling, delayed ack, ... etc) which require an upgrade/update of the
firewall/natbox.
Also, show examples of servers you fail to connect to.
