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тАО06-21-2007 01:08 AM - last edited on тАО11-25-2012 10:33 PM by Maiko-I
тАО06-21-2007 01:08 AM - last edited on тАО11-25-2012 10:33 PM by Maiko-I
sendmail connection timed out
Hi all,
We have been using sendmail on a hp-ux 11.00 (yes I know) server to script automated email messages to trigger a user action for a couple of years now.
Recently something must have changed on our server/network so these emails do not get delivered anymore.
When I send a manual test mail from the commandline:
"/usr/sbin/sendmail -v jeanke.dox@abc.com" (and then write the test message ended with a single dot alone on the last line) I get
"jeanke.dox@abc.com... Connecting to abc.com. via esmtp..."
and a bit later
"jeanke.dox@abc.com... Deferred: Connection timed out with abc.com"
abc.com is an entry in the /etc/hosts file on the server I use sendmail on
When I do "telnet 192.80.80.244 25" where 192.80.80.244 is the IP address of my email server (and the IP address for abc.com in my /etc/hosts file) I get
"Trying ..."
and then a bit later
"telnet: Unable to connect to remote host: Connection timed out"
I can ping ok and traceroute gets to the IP and abc.com fine
So why is sendmail timing out?
Where should I look? What logs could tell me something more?
Is it routing?
Is it DNS?
Is it something else?
Are there other tools beside ping, traceroute and telnetting to port 25 to pinpoint this?
If this is not the correct forum for this and you would recommend I take this to the networking one, please let me know and I close it here and take it there.
Looking forward to your input
Thank you.
Luc Monnens
P.S. This thread has been moved from HP-UX > System Administration to HP-UX > messaging - HP Forums Moderator
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тАО06-21-2007 01:42 AM
тАО06-21-2007 01:42 AM
Re: sendmail connection timed out
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тАО06-21-2007 02:01 AM
тАО06-21-2007 02:01 AM
Re: sendmail connection timed out
the mail.log only shows me these "Connection timed out with abc.com"
ps -ef | grep sendmail gives me:
"sendmail: accepting connections on port 25"
so I guess that is fine.
nsswitch.conf is having "files" first for all - and as said there is an entry for abc.com in my "/etc/hosts".
Two more pieces of information.
1.
abc.com is an internal server of ours (on another network)
2.
when I do a sendmail "jeanke.dox@gmail.com" for instance, I get all the expected sendmail info back from the gmail.com server.
That is also why I think it is not a sendmail issue - which config we did not touch anyway - but a networking one.
Kind regards,
Luc
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тАО06-21-2007 02:14 AM
тАО06-21-2007 02:14 AM
Re: sendmail connection timed out
Possible.
> Is it DNS?
Unlikely. Wrong complaint.
> Is it something else?
Could be a firewall.
> Are there other tools beside [...]
Probably, but I like those. If "telnet
192.80.80.244 25" also fails, that would
explain why sendmail fails. If plain "telnet
192.80.80.244" (or by name) works, then it's
not a simple routing problem. "ping" working
should be similar.
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тАО09-26-2007 04:40 AM
тАО09-26-2007 04:40 AM