Gmail forwarding.

I've taken the step of forwarding all incoming mail for my userid at my main domain to my google account for 3 reasons. 1 is to reduce the amount of spam that I get in my inbox and the second is to give me a decent web interface for my mail as the web interface with 1and1 is awful to use and really slow and thirdly to have a searchable archive of mail available from any computer.
The main computer at home will download the email via pop3 as usual but I'll also have email on the move. I've not forwarded all email via google as it blocks certain attachments (.exe files for example) which I occasionally need but I might do this at a later date with an exception email that goes direct to pop3 instead of via gmail.