No problem and welcome to the forums.
Whilst I don't use any p2p programs an Azureus in particular, I doubt that you could stop azureus using the email ports for what is essentialy p2p traffic, it is probably built into azureus and really is something that they should address, e.g not using pre defined use of ports, conforming to internet standards/protocols, etc.
As you can see from the image in the link I gave, it shows it accessing a web url using port 25 (the last bit of the url :25) this would seem to be internal to the program and not something you select. So if your timeout messages show the same use of the SMTP port 25 avast will attempt to scan it, believing it to be email being sent because it uses the smtp (send) port.
Now you can have the [MailScanner] in the avast4.ini ignore this program javaw.exe so it doesn't scan its content, that however, is a potential security risk.
[MailScanner]
IgnoreProcess=javaw.exe
Personally I would look for a different program that conforms to internet standards/protocols.
Does the p2p shield scan the download content of azureus? It does some Bit Torrent and u Torrent but not azureus in particular.
Edit: I now hope this is your greatest pet peeve of Azureus and not avast! as it isn't avast! at fault