[sdnog] PTR and SPF records
sara.alamin at sudren.edu.sd
Tue Apr 19 06:13:29 SAST 2016
Thanks Trouble , Frank :)
----- Original Message -----
From: "Philip Paeps" <philip at trouble.is>
To: "Sara Alamin" <sara.alamin at sudren.edu.sd>
Cc: "Sudan NOG" <sdnog at sdnog.sd>
Sent: Monday, April 18, 2016 12:57:34 PM
Subject: Re: [sdnog] PTR and SPF records
On 2016-04-18 09:19:24 (+0530), Sara Alamin <sara.alamin at sudren.edu.sd>
> - Is the PTR record is not necessary for the mail system ? I can just
> define MX and A record for it ?
Most mail servers will be very upset if they receive mail from a mail
server without a PTR record. Many mail servers will also insist that
the PTR record and the A record "agree".
The MX record only indicates where inbound email should be sent.
> - Can I configure only spf record to let the recipient email
> servers know what is my SMTP Email server ? in other word Can I use
> SPF record as a replacement for PTR ?
No. The SPF record is an indication of which mail servers *send* email
from your namespace. The MX record denotes the servers that *receive*
your email. These are not necessarily the same machines (and indeed
very often aren't).
Email is difficult. :)
Senior Reality Engineer
Ministry of Information
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