Server reinstall disable exim before backup

[ssgill]

Hello, we are moving from centos 7 to debian. I need to stop accepting mail before final backup is created. What is the the best method for doing this.

systemctl stop exim
systemctl disable exim

or
Just block port 25 by removing in cfs

Thanks

 

[Zhenyapan]

at directadmin services from admin level just stop this service
when you stop it from console - DA will check it and restart.