Hello, I am trying to use TPOP3Send via SSL but I am always receiving the Socket Error. The code I am using is as follows. Destination SMTP server rejected the sender. , Destination SMTP server rejected the recipient. , Destination SMTP server does not want to receive. Web Command Error Codes ; , Required type of authentication (PLAIN or LOGIN) not supported by SMTP server ; , The response to the EHLO command could not.