-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
The Monday 2006-11-27 at 12:30 +0100, Sandy Drobic wrote:
> Just to clarify a few general things about SMTP:
I'm saving these notes ;-)
> - the HELO string that the sending server is using
> is not derived from DNS, it's usually the hostname
> that is configured locally on the machine. RFC 2821 says,
> this string has to be a resolvable FQDN for a domain/host.
Fortunately (for me) not many enforce this.
> - a sending server does not neccessarily need a MX record,
> only correct A record and reverse DNS
Unless some one enforces it on the receiving end as an antispam measure, I
guess :-?
> - the MX record is used to announce servers that will accept
> mail for a domain, not neccessarily server that will send
> for a domain.
>
> - if the server is both sending and receiving mails for a domain,
> then all records (MX, A, reverse DNS) are neccessary.
>
> - if no MX record is set for a domain, mail will be sent to
> the A record of that domain. Though you should set a MX record.
I think that it is usually rejected as domain must exist or similar
message, but again, that may be an antispam measure.
- --
Cheers,
Carlos E. R.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.2 (GNU/Linux)
Comment: Made with pgp4pine 1.76
iD8DBQFFatD3tTMYHG2NR9URAr6oAKCH4aPtsatCJxyOJR4r12XBtlTJ6QCfVptH
O3KzoXxG4m8Sd1pfJrMB+J4=
=LNdn
-----END PGP SIGNATURE-----
--
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
