Incoming and outgoing mail server set as POP3 or IMAP: webmedia.com.pl
If you need use secure encrypted connections, set This server requires a secure connection as checked.
Field "Outgoing server requires authentication" must be checked.
Here are port for connections (but programm probably set this ports automatically):
incoming server POP3 no secure: 110
incoming server POP3 secure: 995
incoming server IMAP no secure: 143
incoming server IMAP secure: 993
outgoing server SMTP no secure 25 or 587
outgoing server SMTP secure 465
PASSWORD ENCRYPTION: MD5 OR APOP