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 From:  "Vadim Pushkin" <wiskbroom at hotmail dot com>
 To:  clarson at eldocomp dot com, leesharp at hal dash pc dot org
 Cc:  m0n0wall at lists dot m0n0 dot ch
 Subject:  Re: [m0n0wall] Unable To Determine Why Outbound SMTP Does Not Work
 Date:  Sat, 21 Oct 2006 18:09:33 +0000
Thanks guys, but my problem is getting outbound connections to other smpt 
servers.  I am testing by telnetting to another host on port 25.  I am not 
getting connected from one particuliar machine only, and it has no selinux 
running.  I have another windoze box that this does work for.  This happened 
after I created a nat rule, which I've since removed.  I am not sure if 
perhaps a remnant of this rule is hosing me somehow, which is why I need to 
know how to clean nat cache or something else.

Thanks all,


>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 
> >> it for bigger things but I am baffled as to why I am unable to get 
> >> 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.