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SMTP test failing, when others tests don't
From: |
Len Conrad |
Subject: |
SMTP test failing, when others tests don't |
Date: |
Sun, 27 Mar 2011 13:06:06 -0500 |
Since we upgraded monit to latest version last Friday, this item:
check host exch1.server.tld-SMTP with address exch1.server.tld
if failed port 25 protocol smtp with timeout 2 seconds 5 times within 5 cycles
then alert
This began failing on one monit machine, so we added it to another monit
machine, where it fails, also.
We don't get an alert every time because the test doesn't fail 5 times in 5
cycles, but monit.log has lots of:
[ Mar 27 09:59:10] error : SMTP: error receiving data -- Resource
temporarily unavailable
[ Mar 27 09:59:10] error : 'exch1.server.tld-SMTP' failed protocol test
[SMTP] at INET[exch1.server.tld:25] via TCP
However, from either of the two monit machines:
telnet exch1.server.tld 25
and
nmap a.b.c.d -p 25 -sT
... work every time, and quickly.
Len
- SMTP test failing, when others tests don't,
Len Conrad <=