I have one particular used who is having issues sending to an outside domain. She can send email to other addresses with no issue. However, with this particular domain she gets the following error:
'firstname.lastname@example.org' on 4/27/2005 9:00 AM
You do not have permission to send to this recipient. For assistance, contact your system administrator.
<ouremailserver.ourdomain.com #5.7.1 smtp;550 5.7.1 Unable to relay for email@example.com>
I did a search and most postings regarding this topic cover entire domains. For example all outgoing email has this problem, however mine is only to one particular domain. Thanks in advance.