{bb} Weird problem with SMTP checking

["Dirk H. Schulz" <dirk.schulz@kinzesberg.de>]

Hi folks,

I am running BB 1.9h on a debian sarge stable system and have a 
phenomenon I cannot solve:

The BBNET host checks a lot of SMTP services on different hosts. For 
some hosts BBDISPLAY shows a red dot with "SMTP down" every 30 to 120 
minutes with a duration of around 5 minutes (4:20 to 5.30). Sometimes 
(once every few days) the uptime duration is several hours, and very 
seldom the downtime duration is several times these 5 minutes.

The weird thing is:

- these smtp services are not down, the successfull connection attempts 
of bbnet are in their logs
- the duration of the downtimes is always around BBNETs BBSLEEP value,
  that means: if BBSLEEP=300, the downtime is around 5 minutes,
  if BBSLEEP=150, the downtime is around 2.5 minutes
- this happens only to smtp hosts which are way outside of the subnet of 
BBNET (other colocation center with other internet uplinks), but there 
is no connection problem:
  ping times are always below 10 ms in average, so half of BBNETs 
accumulated connection attempt times.

I did not find anything that gives me any hint on where to look. I think 
I have checked everything with the SMTP Services (postfix) as well as 
BB, but to no avail.
And, yes, the bb-hosts file is identical on BBNET/BBDISPLAY and the smpt 
hosts (they are also BB clients for checking local values).

Please help me finding what I overlook.

Dirk
--
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-==-=-=-=-=-=-=-=-=-=-=-=
To unsubscribe from this list, or to subscribe to the bb-digest list
send e-mail to mailto:majordomo@bb4.com with unsubscribe bb -and/or-
subscribe bb-digest in the BODY of the message.