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Re: reject_non_fqdn_hostname and RFC

From: Jim Wright (jimwrightthisway.com)
Date: Mon Oct 03 2005 - 07:03:22 CDT


On Oct 3, 2005, at 5:07 AM, Mariano Cunietti wrote:

> There's no point that states an SMTP client should mandatorily give
> an FQDN.
> Can anybody address me to any resource I can eventually look at?

RFC 2821, section 3.6:

http://asg.web.cmu.edu/rfc/rfc2821.html#sec-3.6

Only resolvable, fully-qualified domain names are permitted in SMTP.