smtp error

[aruns_s]

Hi all,
I am using SMTP to send mail in my domain.
In sendmail.cf, i have configured 'DS' name as required. Now the mails are stalled with an error message 'reply: read error from '.It was working early and mails stopped functioning from today...

Your iputs are well appreciated

[Sameer_Nirmal · Accepted solution]

The error messages indicates the either problem at SMTP server side or communication problem on account of network congestion sorta error.

Check the /var/adm/syslog/mail.log to check any other errors.

Check the reachability of the SMTP server using ping , nslookup.

If you are using mailx, you can use debug switches with sendmail to get more information of problem.
echo | mailx -s test -- -v -d8.99 -d38.99 -d3.99 xxx@abc.com >>/tmp/log.txt

[aruns_s]

nslookup is working fine

[aruns_s]

gethostbyaddr(10.4.5.124) failed: 1
syslog error

[Sameer_Nirmal]

Does the ip address shown by gethostbyaddr belong to SMTP server?

Which host name resolution you are using?
/etc/hosts , DNS or NIS ?

What you get if you use both ip address and FQDN of SMTP server with nslookup?

What does mail.log and sendmail debug shows?

[aruns_s]

no. that address does not belong to SMTP.
Able to resolve the smtp adress and ping is also working.
Debug is not giving any errors..

[aruns_s]

no. that address does not belong to SMTP.
Able to resolve the smtp adress and ping is also working.
Debug is not giving following output
getcanonname(abc.com), failed, stat=68
getla: 0
shouldqueue: CurrentLA=0, pri=30154: FALSE (CurrentLA < QueueLA)
getmxrr(smtphubs.intranet.westpac.com.au, droplocalhost=1)
;; res_querydomain(smtphubs.intranet.westpac.com.au, , 1, 15)
;; res_query(smtphubs.intranet.westpac.com.au, 1, 15)
;; Querying server (# 1) address = 10.209.24.250
unexpected answer type 5, size 14
xxx@abc.com... Connecting to smtphubs.intranet.westpac.com.au via relay...
;; res_querydomain(smtphubs.intranet.westpac.com.au, , 1,

[Sameer_Nirmal]

You should have used the the domain name of your setup and not abc.com.
The debug should provide information about the issue.

Did you verify the issue is only for your hpux server? It maybe a case that the there is a problem with SMTP server itself.
Check out with your mail administrator.

The debug could also be collected using these ways.

# echo "test" | sendmail -d38.99 -v -d8.99 xyz@ >>/tmp/log.txt

# sendmail -bt -d8.5 0,3 user@

BTW, Which version of sendmail you are
using?
# sendmail -bs # what /usr/sbin/sendmail