Can you check two things?
Do you really want/need to use this port (7362)?
Are your email accounts well configurated for that?
You need to use 127.0.0.1 and smtp authentication adding something like this:
user_name#smtp_server_name and your password (or let it blank)
This is because your avast4.ini file, this is the ‘default’ server.
Strange, it should work for username#pop3.britishlibrary.net
I think it will be better configure all your email account for not using avast.
After that, close your email program.
Run Mail Protection Wizard and protect all your email accounts.
Open your email program again and let us know what happened…