On Sunday 2005-September-04 13:49, Chris Shipman wrote:
> I have a strange problem. When I try to connect to a mail
> server from my linux router it can't connected to port 25. It seems
> like only port 25 is affected. The WAN port is DHCP and the LAN is
> set static with NAT enabled on outbound.
Many ISP's do block outbound SMTP for dynamic IP space because of the
prevalence of Windows spam worms. But ...
> However a computer behind my linux router has no trouble
> connecting to port 25. It's only when I try to connect from the
> linux router itself. I'm using IPTables 1.3.3
... this appears to refute that hypothesis in this case.
> Does anyone have an idea of what is causing this?
Perhaps you have an OUTPUT rule which you did not understand.
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