Configure Sendmail to use a Smarthost
You
should provide the hostname of the DAS server that you are using as
your preferred CSEG
service domain.
* Edit sendmail configuration sendmail.mc file
vi /etc/mail/sendmail.mc
* Append or modify macro that read as follows:
For US customers:
define(`RELAY_MAILER_ARGS',`TCP $h 587')dnl
define(`SMART_HOST',`mxpool1.us.spamgateway.comodo.com')
dnl
For EU customers:
define(`RELAY_MAILER_ARGS',`TCP $h 587')dnl
define(`SMART_HOST',`mxpool1.spamgateway.comodo.com') dnl
* Regenerate a new sendmail.cf config file with m4 command:
m4 /etc/mail/sendmail.mc >
/etc/mail/sendmail.cf
* Restart sendmail service:
/etc/init.d/sendmail restart
OR
systemctl restart sendmail