SBS2008. We use our ISP to host our emails. SBS uses POP3 Connector to download emails from our ISP email server.
We have a temp worker Sarah, who only needs an email account with our domain. So we createdsarah@ourdomain.com for her from our ISP web site.
Here are what the problems are
1. When our internal users send emails to
Sarah@ourdomain.com, they were bounced back right away.
"#550 5.1.1 RESOLVER.ADR.RecipNotFound; not found ##"
2. When sending emails to Sarah from a gmail account, they were bounced back too.
Delivery to the following recipient failed permanently:
sarah@ourdomain.com
Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by the server for the recipient domain ourdomain.com by mx.ourdomain.com. [xxx.xxx.xxx.xxx]. (our SBS public IP)
The error that the other server returned was:
550 5.1.1 User unknown
What could be the cause of this?
Thank you for your help!
Jack
