Hello Spiceworks,
I'm having some trouble with my onsite Exchange 2010 server. I received information from one of our users that they are unable to receive emails from a contact at Pelican. After taking a look at my Barracuda spam filter, I did indeed find that their emails were being flagged as dangerous. I have since added an exception to allow all emails through the @pelican.com domain. Unfortunately we are still experiencing issues. We are unable to send any emails to the @pelican.com domain. We receive an error which reads:
"The e-mail address you entered couldn't be found. Please check the recipient's e-mail address and try to resend the message. If the problem continues, please contact your helpdesk."
I have also added the IP address of the mentioned domain to our Exchange 2010 IP Allow List, but still unable to send to this...