Re: [cobalt-users] Perl/Sendmail problem?

["Gerald Waugh" <gerald@xxxxxxxxx>]

>Benjamin Tehan <sysadmin@xxxxxxxxxxxx> wrote
< big snip>
> And why is it taking so long to send a simple email.
>
> Some of the sendmail prossesors running on the server are running 10 minutes
> or more, maybe the process has hang or someone is sending a very big file on
> a slow connection.
> /var/log/maillog returns alot of this, I'm talking about millions of lines
> in just today.
>
> Jul  4 05:23:17 dom1 sendmail[25906]: gethostbyaddr(203.117.93.9) failed: 1
> Jul  4 05:23:17 dom1 sendmail[25906]: gethostbyaddr(203.117.93.15) failed: 1
<snip>
> Can some one please advise me on what I can do to improve this problem.
>

gethostbyaddr() is failing. It takes 25 seconds (I think) for each nameserver to
timeout.
And, that is why it is taking so long.
Whose IP's are those 213.117.93, Are those your IP's. If so there is something
wrong with your Resolvers Reverse lookup.
The resolver is trying to find a name for the IP and can't. (Timesout!).
Is this a new problem?
I guess the main question is whose IP's?
netnum:     203.117.93.0 - 203.117.93.255
netname:     SC-SG
descr:       Sakon Colocation
country:     SG
admin-c:     KC9-AP
tech-c:      KE2-AP
notify:      ipaddradmin@xxxxxxxxxxxxxxx
mnt-by:      MAINT-AS4657-AP
changed:     ipaddradmin@xxxxxxxxxxxxxxx 20000526
source:      APNIC
Looks like your colo?