SQL2k5 sp2

I've setup db mail on a box and it seems to work fine. I can send a test
email by right-clicking on the db mail folder, and I can send a test using
sp_send_mail. However, when I setup a test job that will always fail, the
history of the job says it "failed to notify operator...". When I check the
db log it says this:

07/05/2007 16:38:53,,Error,5,The mail could not be sent to the recipients
because of the mail server failure. (Sending Mail using Account 1
(2007-07-05T16:38:53). Exception Message: Cannot send mails to mail server.
(The specified string is not in the form required for an e-mail address.).
),1272,2,,7/5/2007 4:38:53 PM,sa

What string is it referring to? I used the same email address I used to
send a test email in both examples I described above.

Thanks, Andre

I just changed the job to be owned by "sa" instead of me and when I ran it
this time, it sent an email. The strange thing is that I'm a member of the
Administrators Group on this server. So there must be something about DB
Mail and who the job's owner is - correct? Any information that can be
shared about this would be appreciated.

Andre