sendmail problem

[deepak_9]

Hi,

I am facing a problem while sending a mail using SENDMAIL . For on eserver it's working ok. But for other 3 servers it's giving me an error :-

"unable to qualify the domain-name". I checked for /etc/hosts file the entry seems to be ok. I am specifying the relay server ip in /etc/mail/sendmail.cf file. but it's not going through.

[Paula J Frazer-Campbell]

Hi

In etc/hosts put a full stop (period) at end of home server entry.

i.e.

100.100.100.100 this THIS .


Paula

[Chris Wilshaw]

It may be that the server is trying to use DNS to resolve rather than the hosts file.

check /etc/mail/service.switch

if it contains
hosts dns files

it will be trying to use DNS in preference to hosts to resolve addresses.

[Juan Manuel López]

Hi,
Sendmail use the /etc/mail/sendmail.cf config file.
It is here where you have to puit the domain.
That is mean that sendmail can send messages and your machine do not knot what is it own domain.
Edit this file and find the lines:

# my official domain name
Dj$w.terra.es


I hope this help.

Juanma.

[deepak_9]

Hi,

i am getting the below error in /var/adm/syslog/mail.log file :-

Apr 11 19:37:44 apps1 sendmail[1760]: gethostbyaddr(172.17.112.1) failed: 3
Apr 11 19:39:44 apps1 sendmail[1906]: gethostbyaddr(172.17.112.10) failed: 3

Also following is the mailq status :-
apps1:toor:/etc/mail>>mailq
Mail Queue (5 requests)
--Q-ID-- --Size-- -----Q-Time----- ------------Sender/Recipient------------
MAA14525 1134 Fri Apr 12 12:00 adm
(host map: lookup (rsn.hp.com): deferred)
itadm@rsn.hp.com
MAA26021 1134 Thu Apr 11 12:00 adm
(host map: lookup (rsn.hp.com): deferred)
itadm@rsn.hp.com
MAA08010 1134 Wed Apr 10 12:00 adm
(host map: lookup (rsn.hp.com): deferred)
itadm@rsn.hp.com
MAA22025 1134 Tue Apr 9 12:29 adm
(host map: lookup (rsn.hp.com): deferred)
itadm@rsn.hp.com
MAA02170 1134 Mon Apr 8 12:00 adm
(host map: lookup (rsn.hp.com): deferred)
itadm@rsn.hp.com

[Nico van Royen]

If you are using the IP number for the relay in the sendmail.cf file, you might need to enclose it into brackets.
i.e.:
[1.2.3.4] instead of just 1.2.3.4.

[Carlos Fernandez Riera]

check existence and content of /etc/nsswitch.conf

/etc/mail/service.switch is no more used.