Server : Apache System : Linux server2.corals.io 4.18.0-348.2.1.el8_5.x86_64 #1 SMP Mon Nov 15 09:17:08 EST 2021 x86_64 User : corals ( 1002) PHP Version : 7.4.33 Disable Function : exec,passthru,shell_exec,system Directory :  /proc/62590/cwd/etc/

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host_accept_relay:      Host $sender_fullhost is not permitted|
                        to relay through $primary_hostname.|
                        Perhaps you have not logged into the pop/imap server in the last 30 minutes.|
                        You may also have been rejected because your ip address|
                        does not have a reverse DNS entry.