On 10/16/2015 09:56 PM, Andrew Beverley wrote: > I still don't quite understand what's going on though. I've tried the > test myself with a telnet connection, and I can see that I initially > receive the teaser banner. When I then reply to that with "HELO ..." and > try sending an email, I do indeed receive a protocol error. > > What I don't understand, is what I should be doing to make it work > correctly? From reading the SMTP standard, the server sends a greeting, > and I send a HELO command, so what am I doing wrong? How do I "skip > over" the teaser banner?
You're not supposed to respond to the teaser, it's a spam trap. You're supposed to wait for the real banner and respond to that. If you wait a few seconds postfix will issue the real banner and *then* you respond with an EHLO command. Peter
