Re: Hosting multiple Domain/Reverse

From: Kevin D. Goodknecht [MVP] (admin_at_nospam.LSAOL.COM)
Date: 03/29/04 

Date: Mon, 29 Mar 2004 10:20:31 -0600

In news:1511301c415a5$9eef0c30$a501280a@phx.gbl,
Stew <anonymous@discussions.microsoft.com> posted a question
Then Kevin replied below:
> We host multiple domain for email and some are having
> issue sending mail(delays and NDR). I think the issue is
> related to reverse dns. All of the domain's mx records
> point to smpt.AnotherHostedDomain. Are there any
> particular procedures in setting up reverse DNS when
> hosting mail for many domains?

Are all the virtual mail servers on different IP addresses?
If they are just have whomever is responsible for the reverse lookup on
those IP addresses create PTR records for those virtual servers.
If all the virtual servers are on the same IP address, the only suggestion I
can give you is to change the MX records so they all point to the same SMTP
server.
This doesn't mean that your clients will need to change the mail server name
they connect to send mail, that can be left the same. Clients do not connect
by using the MX record's SMTP server. But when your mail server connects to
another mail server to deliver mail, it should be from an IP address that
has a reverse lookup that points back to its host name.

I'll give you an example based on how I do it.
I have three SMTP servers accepting mail for ten domains, each SMTP server
has its reverse lookup pointing to its IP using its real hostname. But when
my clients connect to my SMTP server, they do it by "mail.theirdomain.com"
even though it is not the actual host name of the mail server. 

-- 
Best regards,
Kevin D4 Dad Goodknecht Sr. [MVP]
Hope This Helps
============================
-- 
When responding to posts, please "Reply to Group"  via your
newsreader so that others may learn and benefit from your issue.
To respond directly to me remove the nospam. from my email.
==========================================
 http://www.lonestaramerica.com/
==========================================
Use Outlook Express?... Get OE_Quotefix:
It will strip signature out and more
 http://home.in.tum.de/~jain/software/oe-quotefix/
==========================================
Keep a back up of your OE settings and folders with
OEBackup:
 http://www.oehelp.com/OEBackup/Default.aspx
==========================================

Relevant Pages

  • Re: Outlook wont send large attachments
    ... the one operating your own personal mail server. ... header to the e-mail client while they interrogate the message but that only ... the timeout due to excessive delay. ...
    (microsoft.public.outlook)
  • RE: No delivery report 4.4.7
    ... mail.rabarberlandet.dk is a mail server host on our ISP. ... Please let me know where the mail.rabarberlandet.dk host on. ... Microsoft CSS Online Newsgroup Support ...
    (microsoft.public.windows.server.sbs)
  • Re: Is a DC needed Here?
    ... Yes I FULLY agree with you I want the file server for the mail but there are ... the mail you can create accounts just in the mail server DB alone. ... My mail server does not require AD ... because a mailbox is a difinitive object. ...
    (microsoft.public.windows.server.active_directory)
  • Re: help understand relaying and authentication
    ... Bharat Suneja ... MVP - Exchange ... access on the SMTP virtual server that receives internet mail, ... mail server, then other mail servers fail to send email to me... ...
    (microsoft.public.exchange.admin)
  • Re: help understand relaying and authentication
    ... access on the SMTP virtual server that receives internet mail, ... Current versions of Exchange are configured out of the box with relaying ... mail server, then other mail servers fail to send email to me... ...
    (microsoft.public.exchange.admin)