Re: Firewall appears to block POP traffic (port 110)
- From: "Rich" <Rich@xxxxxxxxxxxxxxxxxxxxxxxxx>
- Date: Fri, 29 Jul 2005 08:53:06 -0700
Hi Edward and Matt
Thanks to Matt's insistence about port 110 I was able to give a robust
response to my ISP's tech help desk today. This focused minds on alternative
root causes. We detected a routing problem through detailed testing and went
on to resolve the issue. Tests have shown that all is now OK. The server was
not implicated in the problem.
Many thanks for your help. Much appreciated.
--
Rich
"Edward Tian" wrote:
> Hi Rich:
> Glad to see that Matt was helping you against this issue. Has it been
> resolved?
>
> If you need further assistance, please feel free to post back.
> Enjoy your weekend! :)
>
> Best Regards
> Edward Tian(MSFT)
> Microsoft CSS Online Newsgroup Support
>
> Get Secure! - www.microsoft.com/security
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> --------------------
> | Thread-Topic: Firewall appears to block POP traffic (port 110)
> | thread-index: AcWTs0VscYSeNkkHQCW2vckShbA59Q==
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> | From: "=?Utf-8?B?UmljaA==?=" <Rich@xxxxxxxxxxxxxxxxxxxxxxxxx>
> | References: <262E0142-605F-4277-A6B2-5D0954FF77FB@xxxxxxxxxxxxx>
> <#HTyINwkFHA.1372@xxxxxxxxxxxxxxxxxxxx>
> | Subject: Re: Firewall appears to block POP traffic (port 110)
> | Date: Thu, 28 Jul 2005 13:31:02 -0700
> | Lines: 57
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> |
> | Thanks for responding, Matt.
> |
> | I'm interested to read your confident statement that port 110 is not
> needed.
> | This is contrary to my ISP who's tech support person told me that port
> 110 is
> | most certainly needed. And it's his system that I have to interface to.
> | --
> | Rich
> |
> |
> | "Matt Gibson" wrote:
> |
> | > Port 110 is not needed to deliver or send mail.
> | >
> | > Feel free to send me an e-mail with your domain name, and I'll check
> it's
> | > config.
> | >
> | > Matt Gibson - GSEC
> | >
> | > "Rich" <Rich@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
> | > news:262E0142-605F-4277-A6B2-5D0954FF77FB@xxxxxxxxxxxxxxxx
> | > > Situation: email on SBS2003 works within the office and from office to
> | > > external addressees. Email from external sites to the email domain
> does
> | > > not
> | > > reach the server.
> | > >
> | > > Background: New Dell server with SBS2003 standard and SP1 installed.
> Set
> | > > up
> | > > with two NICs. Broadband ADSL router is Zyxel 643 set with all ports
> open
> | > > to
> | > > public IP on the server's Internet NIC. Connection to Internet and
> | > > set
> | > > using SBS2003 To Do List wizard. Additional firewall services added:
> | > > and VPN. Email delivery set to ISP's smtp server. Email retrieval
> method:
> | > > Exchange is delivered directly to my server (ISP has created MX
> records to
> | > > server name).
> | > >
> | > > Diagnostics: On scanning ports the ISP can see that port 25 (smtp) is
> | > > open,
> | > > but port 110 (POP) is closed.
> | > >
> | > > Action taken: Disabled firewall termporarily: no change. Examined
> firewall
> | > > port 110 in routing and remote access. It was closed. Manual opening
> of
> | > > the
> | > > port resulted in no change. Scan of the server showed the port 110
> was
> | > > still
> | > > closed.
> | > >
> | > > Any insights about this issue welcome, especially on preferred method
> for
> | > > resolving this issue.
> | > >
> | > > Many thanks
> | > >
> | > > --
> | > > Rich
> | >
> | >
> | >
> |
>
>
.
- References:
- Firewall appears to block POP traffic (port 110)
- From: Rich
- Re: Firewall appears to block POP traffic (port 110)
- From: Matt Gibson
- Re: Firewall appears to block POP traffic (port 110)
- From: Edward Tian
- Firewall appears to block POP traffic (port 110)
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