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. Jerry -- 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/543bc62a.70...@attglobal.net
