Author: Peter Bowyer Date: To: exim-users Subject: Re: [Exim] domino to exim 3.36
Kjetil Torgrim Homme <kjetilho@???> wrote: > On fre, 2004-08-20 at 14:54 +0000, Peter Bowyer wrote:
>> They could change the SMTP banner with which their server announces
>> its ESMTP support (smtp_banner) - if it doesn't say 'ESMTP' then
>> your domino server shouldn't EHLO and shouldn't use the SIZE
>> extension.
>
> this may be true for Domino, but I'd like to make clear that the text
> string returned as part of the connection banner is irrelevant
> according to RFC 2821 (this is true for _every_ response code in
> SMTP). a connecting client should first try EHLO, then fall back to
> HELO if the server says EHLO is an unknown command.
Wow, you're right - I am perpetuating an urban myth. RFC 1651 is quite clear
on this.
