No..mailing isn't easy

Amen to that Tony....it only takes a few people too crazy, too vindictive, or just too stupid to realise or care they opted into your mailing to take your server down. Despite what they say, ISPs don't care about opt in or whether you are a legitimate mailer or whatever....the bottom line is complaints. And these days if you get more than 3 or 4 a month they'll take your server down for good. Now even in a "clean" list of 50,000 a few people like that aren't hard to find.