Author: Jeremy Harris Date: To: Tom Playford CC: exim-users Subject: Re: [Exim] 451-Invalid HELO
Tom Playford wrote: > 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.
*my-server-name* either includes an underbar, or fails to
includes any dots? Your HELO name is supposed to be
an FQDN.