Notes
Check if you can reach a remote server
dig a gmail.com
If this timeouts then try over one of dns resolver directly
[~]# dig @8.8.8.8 a gmail.com
; <<>> DiG 9.11.4-P2-RedHat-9.11.4-26.P2.el7_9.2 <<>> @8.8.8.8 a gmail.com
; (1 server found)
;; global options: +cmd
;; connection timed out; no servers could be reached
Timeout means DNS resolver is dead
[~]# cat /etc/resolv.conf… Read the rest
Here is how it works in other words plus example:
/etc/exim.conf – you can edit this file to keep some changes temporary, then restart exim to get them working. After /scripts/buildeximconf you changes will be reset.
/etc/exim.conf.localopts – its the same as WHM –> Exim Configuration Manager –> Standard options (Basic editor).… Read the rest
service exim stop rm -fv /var/spool/exim/db/* service exim start… Read the rest
Run repair script
/scripts/autorepair spamd_dbm_fix
And restart mail server
/etc/init.d/exim restart… Read the rest
Check the message_size_limit value
exim -bP | grep message_size_limit
message_size_limit = 50M
Increase if needed in
/etc/exim.conf Since recently: /etc/exim.conf.local
Rebuild and restart exim:
/scripts/buildeximconf service exim restart
If you’re still getting the problem please view the following explanation:
cd /var/spool/exim/db service exim stop rm -fv ratelimit* service exim start… Read the rest
If you want to get rid of "On behalf of" in your headers you need to set "Set SMTP Sender: headers" to off from the inside your Exim configuration
WHM –> Service Configuration –> Exim Configuration Manager –> Set SMTP Sender: headers
Should be OFF
grep local_from_check /etc/exim.conf.local… Read the rest
Check and increase (add if needed) the smtp_accept_max value from the inside your exim configuration file
cat /etc/exim.conf |grep smtp_accept_max smtp_accept_max = 100… Read the rest
If you are getting this on your email client as the one of way to fix this out you need to be sure the following settings of your EXIM server is switched to OFF
WHM –> Service Configuration –> Exim Configuration Manager –> Require clients to connect with SSL or issue the STARTTLS command before they are allowed to authenticate with the server.… Read the rest