Well, anyone want to comment on this?
> BTW, it may well be the mailer on your end that is broken, if it times
> out so quickly (the timeout for rfc1413 ident was set to 60 seconds on
> our end, so that shouldn't have caused a timeout waiting for 220
> message:
>
> RFC 1123 says:
>
> o Initial 220 Message: 5 minutes
>
> A Sender-SMTP process needs to distinguish between a
> failed TCP connection and a delay in receiving the initial
> 220 greeting message. Many receiver-SMTPs will accept a
> TCP connection but delay delivery of the 220 message until
> their system load will permit more mail to be processed.
The problem with this theory is that your mailer was not simply
deferring in sending out the header -- it was listening for messages --
one could immediately go ahead and enter input and have it accepted.
Also, your mailer disconnects at 5 minutes. If the sender needs
to be willing to wait 5 minutes for the initial message, your receiver
should wait longer than 5 minutes for the first message from the sender.
In fact, you dump the connection at 5 minutes (see below).
Nowhere in that 5 minute period do you ever send the 220 greeting.
In fact, the only message is the message that you have closed the
connection.
It would appear that when your mail receiver fails in its ident,
it skips sending the greeting, and goes immediately to listening
for input without any 220 greeting. (By the way, it is listening
for input in far less than 60 seconds, so it is not waiting for
the ident.)
Alan
loren:11>date ; tn flyhalf.ctd.comsat.com 25 ; date
Wed Apr 24 07:57:13 PDT 1996
Trying 134.133.40.14 ...
Connected to flyhalf.ctd.comsat.com.
Escape character is '^]'.
421 flyhalf.ctd.comsat.com: SMTP command timeout - closing connection.
Connection closed by foreign host.
Wed Apr 24 08:02:13 PDT 1996
loren:12>
