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 From:  Eldorado <clarson at eldocomp dot com>
 To:  Lee Sharp <leesharp at hal dash pc dot org>
 Cc:  "m0n0wall at lists dot m0n0 dot ch" <m0n0wall at lists dot m0n0 dot ch>
 Subject:  Re: [m0n0wall] Unable To Determine Why Outbound SMTP Does Not Work
 Date:  Sat, 21 Oct 2006 03:16:00 -0700
Lee Sharp wrote:
> On Sat, 2006-10-21 at 00:58 +0000, Vadim Pushkin wrote:
>> Hello;
>> I've been using monowall for my home for quite some time, now I wish to use 
>> it for bigger things but I am baffled as to why I am unable to get outbound 
>> smtp from inside my LAN.  I have very simple rules and setup.
>> My internal network is, my m0n0 box is
> Many ISPs filter smtp.  That is most likely your problem, as I am
> running mail servers behind many m0n0walls.

Many ISPs who think they are smart block port 25, but do not understand 
that port is for MTA (Mail Transport Agent) use to move message.

The port to inject a message into the system is the "submission 
services" port, which is 587.  Try setting that as your SMTP port. 
Works on my ISP, which blocks inbound 25, but not 587.


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