Re: email server-static IP
Paul Cartwright put forth on 12/14/2009 7:39 PM:
> I asked my ISP, and the response I got tells me they can take care of all the
> MX records, and those kinds of things. Yet, I agree, there is lots more to
> it. Not the smallest of which is S P @ M containment. Going from a hosting
> service that has all the background & utilities in place, to my own server
> that has... nothing.
The devil is in the details. If your home broadband ISP is going to
host your DNS, you _must_ inform your domain registrar, Netsol in this
case, of your new DNS servers' and their IP addresses. Then you must
explicitly tell your broadband ISP exactly what records you want in your
zone file and the contents of each record. To minimize downtime (lost
email), you'll want your broadband ISP to already have your DNS zone
created and ready _before_ Netwol switches your domain records. Your
TTL is 900, or 15 minutes, so you shouldn't have to worry about any lost
mail during the DNS switchover, ASSUMING YOU HAVE EVERYTHING ELSE SETUP
CORRECTLY.
>> You _must_ read up on the basics of internet mail server configuration
>> before you continue this journey of yours. By this I don't mean read
>> the docs for Postfix or Sendmail or Exim. By this I mean you need to
>> read about the architecture of internet smtp mail. The RFCs are a
>> difficult read, and parts of them are out of date. I suggest you find a
>> layman's guide to internet mail architecture. There are many available
>> via Google et al.
>
> WHich RFC's, SMTP, POP3, IMAP?
The only relevant RFCs in this case are the SMTP RFCs, 2821 and 2822:
http://tools.ietf.org/html/rfc2821
http://tools.ietf.org/html/rfc2822
If you're running an internet mail server (SMTP) at you home, POP/IMAP
will be handled on your local private network, and thus aren't part of
the current discussion. I guess this would be a good time to point out
that you haven't yet mentioned how you plan to get to the mail that's
delivered to your MX, or what you plan on having your MTA do with
internet mail once it arrives.
--
Stan
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