Linux – Change the sender email of logwatch on RH Linux

The configuration has changed after you re-installed sendmail. Before, it was trying to relay email for this domain via itself. (relay=[127.0.0.1] [127.0.0.1]) i.e. Your mail server was asking itself to send mail.

Now, it's correctly doing the MX lookup and trying to send via the mail servers for ayolla.com (relay=mx.ayolla.com. [66.96.142.51]).

The trouble seems to be that it can't connect to 66.96.142.51. (Or, presumably the other two: 66.96.142.50 and 66.96.142.52.)

Try telnet 66.96.142.51 25 from your server to see if you can connect. An instant fail or a timeout means that there's either a network route that's not correct or a firewall that's not allowing this traffic. If you are sure it's not at your end, it's must be at their end.

I think I have just solved it. I have the following in /etc/hosts:

127.0.0.1 www.mydomain.com test.mydomain.com
127.0.0.1 cdn.mycdn.com
127.0.0.1 localhost.localdomain localhost myserver.com

What I need is to place myserver.com in front of the line with localhost.localdomain so that sendmail will think that it is using a real domain to send out the email.