2009/4/18 Richard Hobson <pub...@richardhobson.com>: > OK, I think I get it. I'm not seeing 250-AUTH, because I'm not connecting > via TLS (when doing a telnet to port 25)?
Yep. It's easy enough to test this though: furin...@shirayuki:~$ openssl s_client -connect mx.richardhobson.com:25 -starttls smtp <lots of negotiation output> 250 DSN EHLO shirayuki 250-mx.richardhobson.com 250-PIPELINING 250-SIZE 10240000 250-VRFY 250-ETRN 250-AUTH PLAIN LOGIN 250-AUTH=PLAIN LOGIN 250-ENHANCEDSTATUSCODES 250-8BITMIME 250 DSN If you try to send a mail manually, you might run into trouble when you perform "RCPT TO: m...@example.com" - this is openssl being silly and renegotiating the connection because the line started with "R" - use a lowercase "r" and it'll work fine.
