Michael Holzt wrote:
The error seems to be fully on side of Vivian Mail here, but i suggest making qpsmtpd more robust in this. I can't see any technical reason why we should deny SMTP AUTH only because the client used HELO instead of EHLO. Is there any?
Yes! RFC's 2821, 1425, and 1123 all support the limitation that HELO does not permit usage of any SMTP extensions. In particular RFC-1123 specifies that only MAIL, RCPT, DATA, RSET, VRFY, NOOP, and QUIT be mandatory in response to HELO.
If you want to break with RFC's to support your client's poor software choices, that's your choice. This is not something that should be in the core code, IMNSHO. And even if it were accepted, it should never be implemented by deleting perfectly legitimate code; it could be a config option if at all.
John
