> Hi
>
> Apart from trapping spam, my requirement for a FQDN HELO also seems to
> bounce some real mail. When I confronted the mail admin resposible for a
> few bounces, he claimed that *he* is following RFC, and I am not for not
> allowing the non-FQDN HELO
>
> My error::
> <connection from:: webmail.dds.nl (also postfix)>
> > > Out: 220 arrakis.ideeel.nl ESMTP Stichting Ideeel Internet (Postfix
> 1.1.11)
> > > In: EHLO http01
> <SNIP>
> > > Out: 504 <http01>: Helo command rejected: need fully-qualified hostname
>
> If I'm correct, RFC-821 states that a proper HELO is required
>
> 5.2.5 HELO Command: RFC-821 Section 3.5
> The sender-SMTP MUST ensure that the <domain> parameter in a
> HELO command is a valid principal host domain name for the
> client host. As a result, the receiver-SMTP will not have to
> perform MX resolution on this name in order to validate the
> HELO parameter.
>
> So; am I correct in requiring a proper HELO? How do other people handle
> these issues?
You are correct. If you really want to get mail from him, you can always whitelist his server - that is what I do for "admins" [sic] who are really as clueless as that....

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