On 26 Sep 2020, at 07:45, Alec Moskvin <al...@gmx.com> wrote: > 250-AUTH PLAIN LOGIN > 250 AUTH=PLAIN LOGIN
I believe this is not really an issue. The warning is just that, a warning. Some (broken) mail clients, Immagonnaguess Microsoft ones, expected the =, so many mail servers provide it. AFAIK, It is safe to ignore the warning. Ah, yes, I think this is it? (At least for Postfix) <http://www.postfix.org/SASL_README.html> > broken_sasl_auth_clients (default: no) > Enable interoperability with remote SMTP clients that implement an obsolete > version of the AUTH command (RFC 4954). Examples of such clients are > MicroSoft Outlook Express version 4 and MicroSoft Exchange version 5.0. > > Specify "broken_sasl_auth_clients = yes" to have Postfix advertise AUTH > support in a non-standard way. It is probably safe for anyone to disable that, however, as I don't think those old versions support modern TLS. -- showing snuffy is when Sesame Street jumped the shark
