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Zmailer to Exchange bug ?
Lately we noticed on our boxes that we got hanging smtpservers.
The version we're running right now is: ZMailer Server 2.99.55
What seems to happen is that after getting to BDAT state the connections
hang and Zmailer nor the remote end closes them, causing smtpserver to
just say sleep, sleep sleep (according to strace)
The boxes to which we see hanging smtpservers all have similar versions:
Microsoft ESMTP MAIL Service, Version: 5.0.2195.4453 ready at..
Microsoft ESMTP MAIL Service, Version: 5.0.2195.4905 ready at..
Microsoft ESMTP MAIL Service, Version: 5.0.2195.2966 ready at..
A sample one from ps says:
daemon 1411 0.0 0.3 1960 1504 ? S May 13 0:00
<tacv-internet.tacv.com BDAT 129671 LAST net.tacv.com BDAT 129671 LAST
.tacv.com BDAT 129671 LAST .com BDAT 129671 LAST m BDAT 129671 LAST
# truss -p 1411
*** SUID: ruid/euid/suid = 0 / 1 / 1 ***
read(0, 0xEFFFD310, 8192) (sleeping...)
and that's all there is.
Did people see this before ? I tried 2.99.56 snapshot some time ago, but
that kept mail instead of sending it on (i didn't see quickly why, so i
backed it out).
This happens on both ETRN as fallback MX boxes.
Any hints appreciated.
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