Author: Chris Meadors Date: To: exim-users CC: Tom Playford Subject: Re: [Exim] 451-Invalid HELO
On Wed, 2004-04-28 at 23:36 +0200, Nico Erfurth wrote: > Tom Playford wrote:
>
> > I've been sending emails to *.ox.ac.uk for years, a few weeks ago all my
> > emails started getting
> > delayed, and then eventually cancelled, with this error:
> >
> > 2004-04-28 21:53:09 1BIQbt-0000qF-00 ==
> > help@??? T=remote_smtp defer
> > (0): SMTP error from remote mailer after RCPT
> > TO:<help@???>: host
> > oxmail.ox.ac.uk [163.1.2.161]: 451-Invalid HELO (**my-server-name**)
> > used by **my-server-ip**. See
> > RFC2821 S4.1.1.1 for syntax\n451-of the HELO command. This is a
> > temporary error. You may try again
> > after\n451 this server (**my-server-ip**) has been fixed.
> >
> > I have spoken to computing-services at Oxford at they say it's a fault
> > at my end. This is strange as
> > I haven't changed my configuration or upgraded exim for months.
> >
> > Does anyone have any suggestions, is it a fault at my end at all?
>
> Well, maybe you should show us your HELO string?
The IP would probably help a bit too, to make sure that your server's
HELO at least forward looks-up to the IP that it is sending from.
