Editing Smart Relay Host Port in Sendmail

[[category:CDIL]]

'''Issue:''' Database Server 192.168.1.1 was not able to send the cron mails to local server 192.168.1.10

Diagnosis :
# Was connecting to internet for email.cdil.com , it should connect to local server 192.168.1.10 for sending mails 
# database server was using sendmail on port 25 to send the mails , It should relay all the mails via 192.168.1.10 on port 26 ( only port opened on it , 25 was closed )

So to resolve the Point 1 , entry on /etc/hosts was done as shown Below 
 192.168.1.10  mailserver.cdil.com '''email.cdil.com'''

Point 2 , We have enabled relay on sendmail to port 26 as per the below details 



'''''There is an alternative to relay email using a different port at their mail server and their mail server supports SMTP authentication. You may follow the simple Sendmail setup below: –'''''



1. Find “DS” in /etc/mail/sendmail.cf and add your mail server name as below: –

'''DSemail.cdil.com'''


2. Find “Mrelay” in /etc/mail/sendmail.cf and add “26” to “A=TCP $h” as below: –

'''A=TCP $h 26'''


3. Then, restart your Sendmail service as below: –


'''service sendmail restart'''


5. Finally, you can monitor your maillog using the command below: –

'''tail -f /var/log/maillog'''


'''Reference'''   [http://wingloon.com/2008/04/06/setup-smart-relay-host-port-in-sendmail/] http://wingloon.com/2008/04/06/setup-smart-relay-host-port-in-sendmail/