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smtp.c ignoring 451?


We're running 2.99.55. We've discovered entries in our mail log like:

Jun 29 03:32:56 mymachine smtp[3465]: S1355559AbVF2HcX: 
to=<361khcdz@yahoo.co.kr>, delay=00:00:33, xdelay=00:00:23, mailer=smtp, 
relay=mx3b.mail.yahoo.co.kr ([|25||60522]), 
stat=ok3 ^M->> 451 mta104.mail.krs.yahoo.com Resources temporarily 
unavailable. Please try again later [#4.16.5]. cvt=NONE

The 'stat=ok3' suggests that smtp.c thinks the message was successfully 
delivered. But the other end clearly sent a '451'. The user says they 
never got the message at the other end, e.g. yahoo.com.

There are many other log records where the '451' results in stat=deferred
or stat=retryat which then results in subsequent attempts. So not all 
451's result in dropped messages.



Peter Ip, PhD
Computing and Network Services, University of Toronto
email: peter.ip@utoronto.ca
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