I am currently hosting on 1and1.com and I have had a problem here lately with their spam filter and my work spam filters blocking my emails. Is there a proper format to stop your email from being blocked. I have one domain that has been registered since 2001, but anything in the last two years that have been register I am having problems with. The format I user for my email is f.last@domain dot com and the one for the domainthat has been register since 2001 is just customer@domain dot com. But if anyone can tell me is there a standard format is friendly towards spam filters to not get blocked. I like the spam filter it is just going above and beon. Thanks