Re: [exim] Are we being harsh

Michael J. Tubby B.Sc. (Hons) wrote:

> e) senders that say HELO for domain names, not hosts

How do you determine this?
My mailserver's fqdn is ymmv.de (with PTR, A and MX set up), but this is
also a domain name. In fact, any "domain name" can be a FQDN, even if
it's "im" (posted recently here and is _not_ a FQDN, only has a MX record).

> People that don't say HELO:
>
> 2005-04-10 08:56:51 SMTP protocol violation: synchronization error
> (input sent without waiting for greeting): rejected connection from
> H=[210.212.246.61]

No, they simply started so send something (probably even a valid
HELO/EHLO) before they got your greeting. Exim does this by default (and
it's ok in my opinion).