Re: Email Reverse DNS
- From: v-chacez@xxxxxxxxxxxxx (chace zhang)
- Date: Wed, 29 Nov 2006 06:55:35 GMT
Hi,
Thanks for your update.
Actually you should contact your external domain registrar, as some famous
email system just like AOL, YAHOO request DNS reverse lookup for any
inbound email.
Please make sure you register a PTR record for your MX record in other
words, it should be the external ip address on your Firewall.
Hope this helps, if anything unclear, please feel free to let me know.
Have a nice day!
Best Regards,
Chace Zhang (MSFT)
Microsoft CSS Online Newsgroup Support
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--------------------
| From: "Meshmanp" <meshmanp@xxxxxxxxx>
| Newsgroups: microsoft.public.windows.server.sbs
| Subject: Re: Email Reverse DNS
| Date: 28 Nov 2006 10:19:47 -0800
| Organization: http://groups.google.com
| Lines: 46
| Message-ID: <1164737987.837097.144030@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
| References: <1164673175.498230.66210@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>
| <1164731775.375907.117950@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>
| NNTP-Posting-Host: 12.184.137.130
| Mime-Version: 1.0
| Content-Type: text/plain; charset="us-ascii"
| X-Trace: posting.google.com 1164737993 22636 127.0.0.1 (28 Nov 2006
18:19:53 GMT)
| X-Complaints-To: groups-abuse@xxxxxxxxxx
| NNTP-Posting-Date: Tue, 28 Nov 2006 18:19:53 +0000 (UTC)
| In-Reply-To: <1164731775.375907.117950@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>
| User-Agent: G2/1.0
| X-HTTP-UserAgent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1;
..NET CLR 1.1.4322),gzip(gfe),gzip(gfe)
| Complaints-To: groups-abuse@xxxxxxxxxx
| Injection-Info: 80g2000cwy.googlegroups.com; posting-host=12.184.137.130;
| posting-account=RfGu9w0AAAANNb4CnOvk3yE6RtlY7rHV
| Path:
TK2MSFTNGXA01.phx.gbl!TK2MSFTNGP01.phx.gbl!TK2MSFTFEEDS02.phx.gbl!newsfeed00
..sul.t-online.de!t-online.de!news.glorb.com!postnews.google.com!80g2000cwy.g
ooglegroups.com!not-for-mail
| Xref: TK2MSFTNGXA01.phx.gbl microsoft.public.windows.server.sbs:315848
| X-Tomcat-NG: microsoft.public.windows.server.sbs
|
| When you say the ISP's DNS do you mean my domain registrar or AT&T the
| T1 provider. The mail appears to come from the sorrect computer
| my.mail.server@xxxxxxxxxxxx, but the IP address associated is that of
| the firewall gateway address. I have a block of 30 addresses and the
| mailservers are NATted behind the firewall.
|
|
| Moloy Tandon [MSFT] wrote:
| > Hi,
| >
| > Certain domains like Comcast, AOL, Earthlink, etc require that the
| > sending domains should have a pointer (PTR) record.
| >
| > You must create a reverse lookup zone PTR record on the DNS running on
| > SBS and also on the ISP's DNS server.
| >
| > For more info:
| >
| >
http://www.microsoft.com/windows2000/en/server/help/default.asp?url=/windows
2000/en/server/help/sag_DNS_und_ReverseLookup.htm
| >
| >
| > Thanks,
| > Moloy
| >
| >
| >
| >
| > Meshmanp wrote:
| > > When I email Comcast the email bounces back with the following:
| > >
| > > Your message did not reach some or all of the intended recipients.
| > >
| > > Subject: Test
| > > Sent: 11/27/2006 3:49 PM
| > >
| > > The following recipient(s) could not be reached:
| > >
| > > address@xxxxxxxxxxx on 11/27/2006 3:49 PM
| > > There was a SMTP communication problem with the
recipient's
| > > email server. Please contact your system administrator.
| > > <my.server #5.5.0 smtp;521-EHLO/HELO from sender
| > > 12.184.137.130 does not map to my.server in DNS>
| > >
| > > The IP in the NDR is that of my firewall. What are the options for
| > > pointing the IP/address to the external IP of the mailserver itself?
|
|
.
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