Same Pop3 E-mail Problem

[fat boy]

I am having a little bit of a different problem. I have set up 3 pop acounts, all exactly the same setup(except the address of course). the first one works perfect and I can recieve, reply and send new emails, BUT the second two can only recieve, no reply or new emails. I had this same problem with my touch so this time I set up a different account first and that one works. It appears to me the be the first one set up is fine and the others get the following error message.
"The message(s) could not be sent. Check that you have network coverage and that your account information is correct. then try sending again."

the odd things is I will get this when I hit send/recieve and I just got incoming email. Anybody familar with this error?