This topic describes the settings on the In Mail page if Receive using SMTP is chosen as the mail retrieval method. See this topic for the more information on the In Mail settings page.

Most of the settings on this page are usually only needed for incoming SMTP mail feeds over a dial-up connection.
VPOP3 is always listening for incoming SMTP connections, so if you have a permanent Internet connection, VPOP3 will always accept incoming SMTP messages, even if it is not actively receiving mail (ie if the status window reports 'Offline')
If you have to dial a connection before receiving incoming SMTP mail, then VPOP3 needs to wait online for the incoming SMTP connection to start. The Wait for up to X seconds for an incoming SMTP connection option tells VPOP3 how long it should wait. Usually 30 seconds or a minute is long enough, but some ISPs may take longer than that before starting to send messages.
Some ISPs require an ETRN command to be sent to them to tell their mail server to start sending you messages (otherwise known as dequeueing your mail). If this is the case check the Use ETRN box, and enter your domain (or node - ask your ISP for details) in the Parameters for ETRN box. You should also enter the address of the mail server that the ETRN command needs to be sent to into the Server to send ETRN to box.
If your ISP requires a different command to be sent to tell them to start sending you email, then you should obtain a program to send this command to them (ask your ISP if they have a suitable program) and run that program using the Post-Connect Extension.
See here for more details on incoming SMTP mail
If you want to filter incoming SMTP messages, see SMTP Rules, or the other Content Filtering methods.