mail.mydomain.com don't work - I need to add :9998 Why ?

[MelvinL]

I installed the plesk 9.2 and smartermail 5.5. Works fine, send and received, perfect.

My problem:

1. If I type mail.mydomain.com, its loads mydomain.com web page, if I use mail.mydomain.com:9998 load the smartermail web mail interface nice.

What I'm doing wrong ?

2. I need to add [email protected] and password to gain access, don't work without @mydomain.com. In normal installation I enter mail.mydomain.com, enter the user name and password and thats it.

What I'm doing wrong ?