On Mon 13 Oct 2014 at 08:31:38 -0400, Jerry Stuckle wrote: > On 10/13/2014 5:25 AM, Brian wrote: > > On Mon 13 Oct 2014 at 04:06:27 +0200, lee wrote: > > > >> Harry Putnam <rea...@newsguy.com> writes: > >> > >>> lee <l...@yagibdah.de> writes: > >>> > >>> [...] > >>> > >>> Thanks for the tips. > >>> > >>>>> SMTP>> EHLO 2xd > >>> > >>>> That's an invalid helo string. > >>> > >>> Is a valid one made up of just the full fqdn? > >> > >> See https://tools.ietf.org/html/rfc2821#section-4.1.1.1 > >> > >> It says to either use the fqdn or, if not possible, an IP > >> literal. However, it's common practise to deny IP addresses in HELO > >> greatings. > > > > An address literal is not the same as an IP address. An MTA should not > > be rejecting mail on the basis that the HELO is an address literal. > > > > It's probably academic what the HELO is most of the time. Many ISPs > > will accept any old rubbish for it. > > And more and more companies are rejecting invalid or incorrect > information in the HELO message.
The HELO/EHLO must be a primary host name or an address literal so, if it is not, they appear to have strong grounds for their action. -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/13102014145945.91bec41d0...@desktop.copernicus.demon.co.uk
