timeouts from one machine and not another

Aristedes Maniatis ari at ish.com.au
Wed Jul 7 02:24:26 CEST 2004


Many SMPT servers do a reverse DNS lookup on the host which is 
connecting in order to apply spam filtering rules, HOST checking, etc. 
Do you have you reverse DNS setup OK?

Ari Maniatis


On 07/07/2004, at 9:57 AM, David Bishop wrote:

> I get a lot of
> time-out errors on certain machines (it times out when checking smtp 
> and
> ftp) and on the other, I don't.  If I try it from the command-line 
> (just
> telnetting to the ports), it hangs for a long time (long being greater
> than 10 seconds) but finally connects.



-------------------------->
ish group pty ltd
http://www.ish.com.au
7 Darghan St Glebe 2037 Australia
phone +61 2 9660 1400   fax +61 2 9660 7400
PGP fingerprint 08 57 20 4B 80 69 59 E2  A9 BF 2D 48 C2 20 0C C8



-------------------------------------------------------
This SF.Net email sponsored by Black Hat Briefings & Training.
Attend Black Hat Briefings & Training, Las Vegas July 24-29 - 
digital self defense, top technical experts, no vendor pitches, 
unmatched networking opportunities. Visit www.blackhat.com
_______________________________________________
Nagios-users mailing list
Nagios-users at lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/nagios-users
::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. 
::: Messages without supporting info will risk being sent to /dev/null





More information about the Users mailing list