[Mike_Atamian1]

OS 10.2.6, G4...
Mail has been working fine for over a year until tonight, when I am unable to send messages. I get the following error message:
"The outgoing mail server <mailserver name> failed to deliver this message. 5.0.0 Access Denied"
It then prompts me for a series of servers. generallly it seems to revert to localhost on the first try, and then goes down the list (side question: where does this list come from anyway? There seem to be choices that aren't servers I entered). All of them fail.
The strange thing is, I did nothing at all to my account. I was reseiving and sending e-mail, and then boom, I get this. Messages still come in, they just can't go out. Anyone?

[SeaFox]

Call you ISP. Their SMTP server may actually be down.
Also, check about the status of your account with them. There are some viruses on the Wintel platform that will send themeslves to people with folks from the originating users address book listed as who it's from (I think that's how it goes). Your ISP may have gotten contacted about such viruses being YOU so they have disabled the email account to prevent sends, ect.
Also, are you using you ISP's SMTP server. or the mail accounts SMTP server? Not all ISP's will relay messages to other mail servers. Your may have decided to stop, so if you were using the mail account's server you can't send mail anymore through it.