Try setting the Use secure connection (SSL) option to never in the
Outgoing Server (SMTP) options under Mail/News Account setting dialog.
Worked for me and a few others. Could still be a problem with sending
to another server outside your ISP though.
DvB wrote:
> I set up an extra pop3 account under mail/news and set it up so that it
> would send mail through its own smtp server instead of the default. I
> also checked the 'use name and password" box.
>
> Now whenever I try to send mail with that account, I get the message:
>
> "An error occurred while sending mail. The mail server responded: 5.7.1
> <to-address>... Relaying denied. IP name lookup failed [xxx.xx.xxx.xxx].
> Please check the message recipient and try again."
>
> where "to-address" is a yahoo mail address (but it also gave me that
> error for [EMAIL PROTECTED]) and xxx.xx.xxx.xxx is the ip
> address of my desktop machine which is behind a firewall.
>
> Sending mail through the default pop3 server works fine. Anyone know
> what the heck is going on?
>
