Undelivered Mail Returned to Sender

From: MAILER-DAEMON@localhost
Domain: IP info localhost
MX-server: IP info mx.add5000.com
Size: 1289 Bytes
Create: 2021-01-13
Update: 2021-01-13
Score: 0
Safe: Yes

This is the mail system at host mx.add5000.com. I'm sorry to have to inform you that your message could not be delivered to one or more recipients. It's attached below. For further assistance, please send mail to postmaster. If you do so, please include this problem report. You can delete your own text from the attached returned message. The mail system : Command died with status 255: "/speedsites/emailfake.com/emailtransport/emailfaketransport2.php". Command output: Warning: in_array() expects parameter 2 to be array, null given in /speedsites/emailfake.com/emailtransport/emailfaketransport2.php on line 2411 Fatal error: Uncaught Error: Class 'UnsupportedTransportException' not found in /speedsites/emailfake.com/emailtransport/emailfaketransport2.php:2412 Stack trace: #0 /speedsites/emailfake.com/emailtransport/emailfaketransport2.php(2265): Version1X->handshake() #1 /speedsites/emailfake.com/emailtransport/emailfaketransport2.php(1725): Version1X->connect() #2 /speedsites/emailfake.com/emailtransport/emailfaketransport2.php(2542): Client->initialize() #3 {main} thrown in /speedsites/emailfake.com/emailtransport/emailfaketransport2.php on line 2412

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