> There  was  no  entries  in  the  log  file stating failed SMTP AUTH
> sessions, it was like they were not even hitting my server.

Well, there is something here:

> 20021029 074545 127.0.0.1       SMTPD (99A0014C) [65.66.8.21] connect
> 24.116.28.216 port 1058
> 20021029 074546 127.0.0.1       SMTPD (99A0014C) [24.116.28.216] HELO prod

vs.

> 20021029 093149 127.0.0.1       SMTPD (1B480224) [65.66.8.21] connect
> 24.116.28.216 port 1321
> 20021029 093149 127.0.0.1       SMTPD (1B480224) [24.116.28.216] EHLO prod

In  the  former  situation, there's not even a log of the initial EHLO
that  would  later  have  fallen  back  to  HELO.  So this supports my
supposition  that  the problems that appear to be with SMTP AUTH begin
well before the authorization function is called.

It  seems  that  during  these  flaky  periods,  SMTPD32 will not even
process  an  EHLO as a legitimate command (as "unimplemented commands"
are not logged). So, with ESMTP off, AUTH is off by extension.

-Sandy


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