Thanx stickyb - I'll take a look and try to find some commonality. Take me a few days cos am just leavin for work.
Howling - will look into that but as most of my new spam is from postmasters as returned mail does the mailblocker block THAT too? Does that mean I'll lose any REAL undeliverable messages when I get a mailblocker? That would be a small issue I guess.....