Re: 3com Officeconnect Firewall25 + SMTP

From: Bill Somerville (bsomerville@toad.net)
Date: 04/06/02 

From: "Bill Somerville" <bsomerville@toad.net>
Date: Sat, 6 Apr 2002 08:38:32 -0500

You should be able to get this working. Did you add SMTP as a service on
the Access / Services page? (Presumably so). You should only need
one-to-one NAT if you have more than one SMTP server - use Access / Services
and just enter the private IP address of the SMTP server there (the firewall
public address would be the SMTP public address). Then, you'll still need
the rule to allow SMTP traffic to the SMTP server from the WAN.

FYI, your firewall is a re-branded SonicWALL, so you might try searching
their FAQ too.

-- Bill

"David Jenkins" <sove2000@ntlworld.com> wrote in message
news:c4Br8.6$IT3.501@news6-win.server.ntlworld.com...
> We have recently had ADSL installed at work which delivers mail direct via
> SMTP. The penny pinching finance director in his wisdom only ordered the
25
> user version of the 3com firewall despite requests otherwise.
>
> My question is can I still use this firewall to allow smtp mail into the
> network even though there is no DMZ port.
>
> I have tried using a One to One NAT for the public IP address of the
> mailserver to an internal IP and allowing SMTP to this IP number but mail
> doesn't seem to be coming through. The information on the 3com website
> seems to suggest this is possible. Is there something I am missing or
would
> I need to get a firewall with a DMZ?
>
> Any help or advice is much appreciated.
>
>

Relevant Pages

  • Re: Exchange behind WatchGuard Firewall
    ... If the server is in a DMZ there is definately a firewall involved. ... Proxy services usually only transmit standard SMTP and not extended SMTP ... | Subject: Re: Exchange behind WatchGuard Firewall ...
    (microsoft.public.exchange2000.connectivity)
  • Re: Bouncing Email
    ... some external mail is getting through ... Both SMTP and POP3 have been allowed. ... > sits on the lan side of the firewall. ... message does the client get when it contacts your SMTP server? ...
    (comp.security.firewalls)
  • Firewall and Outgoing Email
    ... I've recently added a 2nd email account to Outlook. ... is not from my ISP so the SMTP server requires authentication (same ... it might have something to do with the firewall and that I switch the ... SMTP port from 25 to 587. ...
    (microsoft.public.windowsxp.help_and_support)
  • Re: Exchange behind WatchGuard Firewall
    ... first article deals with sending SMTP out through the firewall. ... I don't believe SMTP will really be involved. ... Watchguard. ... > Watchguard firwalls usually come with a SMTP Proxy service running on ...
    (microsoft.public.exchange2000.connectivity)
  • Symantec Enterprise Firewall (SEF) SMTP proxy inconsistencies
    ... Symantec Enterprise Firewall (SEF) SMTP proxy inconsistencies ...
    (Bugtraq)
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