Thanks JD and Bart for the Info.
I checked with Cox and they are definitly blocking
port 25.
Here is a list of all the ports that COX is currently blocking:
Port Transport Protocol Direction Reason for Filtering
25 TCP SMTP Both* SMTP Relays
80 TCP HTTP Inbound Web servers, worms
135 UDP NetBios Both Net Send Spam/Pop-ups, Worms
136-139 UDP, TCP NetBios Both Worms, Network Neighhood
445 TCP MS-DS/NetBios Both Worms, Network Neighhood
1433 TCP MS-SQL Inbound Worms, Trojans
1434 UDP MS-SQL Inbound Worms, SQLslammer
1900 UDP MS-DS/NetBios Both Worms, Network Neighhood
27374 TCP Subseven Both SubSeven Trojan
Dan
> -----Original Message-----
> From: plug-discuss-admin@lists.plug.phoenix.az.us
> [mailto:plug-discuss-admin@lists.plug.phoenix.az.us]On Behalf Of Bart
> Garst
> Sent: Friday, November 14, 2003 9:28 AM
> To: PLUG Discuss
> Subject: Re: remote e-mail
>
>
> Cox won't let any mail-server (except theirs) be used from any of their
> non-bussiness accounts.
>
> They have details on their website.
>
> Bart
>
> On Fri, 2003-11-14 at 09:22, Daniel McAferty wrote:
> > Hello PLUG,
> > I have remote users sending e-mail thru
> > my linux e-mail server. We are using the
> > pop-before-smtp (DRAC) to authenticate the
> > users ID before allowing relay.
> >
> > However, one user connects through COX isp
> > and he cannot send through. He can pop his incoming
> > mail but gets an error: "Unable to connect to the server"
> > when sending out.
> >
> > I do not have this problem from other isp's only the COX
> >
> > Does anyone else had problems with COX.
> >
> > Thanks,
> > Dan
> >
> >
> >
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