On 2018/10/27 21:00, centos-request at centos.org wrote: > I've previously configured sendmail to send system messages on selected > servers running CentOS 6. Usually they just kinda' work out of the box. No > problems to speak of. > > However most of my CentOS 7-servers are rather flakey when it comes to > sendmail. Most of the time they just won't send mails for whatever reason. > Further, most of the time I can get it working, it's usually about a > firewall rule not set, the firewall not having been reloaded or some simple > such. Another thing to try would be Postfix. I've always found that very easy to use and also requires almost no configuration: https://www.server-world.info/en/note?os=CentOS_7&p=mail&f=1 (on the same site, a lot of very useful CentOS7 info) Usually for local servers, all I do is: 1. Add root alias in /etc/aliases 2. Run 'newaliases' 3. Send test mail: echo "test from `hostname`" | mail -s 'mail test' me at address That's all. ian