Prepared By Sarang Acharya
Email evolutioncage@gmail.com
Verify all the required packages are installed or not.
# rpm -qa |grep -iE "sendmail|m4"
Packages should be
1)sendmail-cf
2)sendmail
3)m4
take a backup of existing mail directory
# tar -cvzf /root/mail_`date +%F`.tar.gz /etc/mail
edit /etc/mail/sendmail.mc and add below lines
Note:- verify if below lines already exists
FEATURE(masquerade_envelope)
FEATURE(genericstable, `hash -o /etc/mail/genericstable')
GENERICS_DOMAIN_FILE(`/etc/mail/genericsdomain')
edit /etc/mail/genericstable to masquerade local accounts with prefered email accounts as below
root incidents@emailorg.com
execute below command to generate db format
# cd /etc/mail
# makemap -r hash genericstable.db < genericstable
edit /etc/mail/genericsdomain to reflect the servers actual FQDN refer below for example.
snaptestdb.
com
emailorg.
Test the setup.
Send a test mail as below
echo "Test mail"|mail -s "testing incidents" incidents@
,alerts@xnode.com,yourmailaccount@yourorgmai.com
emailorg.com
Make sure that you receive mail from this server where from address is incidents@
and also verify if a incident is generated.
emailorg.com