[python-win32] smtplib problem: error 451 timeout

[Howard Brydle]

Since applying Service Pack 2 to Exchange 2000 (running on Windows 2000 =
Server SP2), I am getting this error intermittently, but repeatedly, =
from smtplib.py:

send: 'ehlo PERFORCE'
reply: '451 Timeout waiting for client input'
reply: retcode (451); Msg: Timeout waiting for client input
send: 'helo PERFORCE'
send: 'mail FROM:<PerforceReviewDaemon>'
send: 'mail FROM:<PerforceReviewDaemon>'

I note this comment in the ehlo method:

        # According to RFC1869 some (badly written)
        # MTA's will disconnect on an ehlo. Toss an exception if
        # that happens -ddm

Is this a known issue with Microsoft Exchange 2000 server, service pack =
2?=20