> I looked at the log files (SYSMMDD.TXT files in the Spool directory)
> and for some reason, there is a strange command sometimes, which is
> EHLO instead of HELO.
EHLO is the same as HELO, but for advanced SMTP commands. An SMTP server that
understands EHLO will send the EHLO command first. If the receiving SMTP server
understands EHLO, it will respond with a positive response. If not, it responds with
that 500 COMMAND NOT IMPLEMENTED line. If you look after that, you will see that the
sending SMTP server sends a HELO.
-Scott
Please visit http://www.ipswitch.com/support/mailing-lists.html
to be removed from this list.
