Hello everyone, todays I am going to share how AIX admin can modify existing SMTP server configuration.
When AIX admin do AIX LPAR migration from one DATA Center to other and after migration SMTP mail server will be different. So this different mail server need to be changed in "sendmail.cf" file else mail alert for application will not generated or it will stuck.
For AIX LPAR we did migration and after migration, we did post check and handover to development/application team, but after handover, they complaining that they not receiving mail alert on their team mail ID from migrated AIX server.so after doing analysis we found that mail server configuration missed and that need to be corrected. After replacing Mail Server with correct name, everything worked fine and team receiving mail.
Steps, which we followed for SMPT server change
Step1 : vi /etc/sendmail.cf
sendmail.cf -> /etc/mail/sendmail.cf // in /etc you will find this file
Step 2: Find word “smart relay” in this configuration file like below
DSoldsmtp.server.com //old SMTP server
Replace old SMTP name with suitable new SMTP server which suits current environment after AIX LPAR migration
DSnewsmtp.server.com //new SMTP server
Step 3:
Stop sendmail service and start it using following commands.
#stopsrc -s sendmail
# startsrc -s sendmail -a "-bd -q30m"
-bd Start sendmail process at background as daemon.
-q30m process mail queue every 30 minutes.
Thanks!!!
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