Yesterday I upgrade my CentOS e-mail server and I changed the version of
Squirrelmail and PHP. Now, after the changes, I can't send e-mail by
squirrelmail. I can send only by e-mail clients like Thunderbird and
Outlook in the network.
I did a backup of the old configuration and data files and I replaced it
on the new configuration, but nothing happen. I need someone's help.