SBC blocking port 25

I thought I had posted this before, but I guess not. SBC is evil and blocked port 25, I thought most everyone would have found out about this by now but I guess not. I keep getting calls and sometimes an email from people who’s outlook or thunderbird or (insert other email program here) client doesnt work. Everytime they are on an SBC DSL line, and SBC has “filtered” (or...