I have a basic network\wan\VPN setup. An Exchange 2010 server is in our main office. All remote offices are connected to the main office via a VPN. Cisco ASA's are used at all locations.
What we are wanting to do is setup the Scan to Email feature on our LaserJet MFP M525s. I configure IP and SMTP settings on the LaserJet at a remote office and can ping the email server and vise versa. But the SMTP settings fail the tests. I try to telnet to port 25 on the Exchange server and it times out and fails. I have the same LaserJet at our main office and configure it the same way it works just fine. I can telnet to port 25 on the exchange server at our main office.
I'm assuming that this is why SMTP settings fail on the MFP's at the remote sites. I have checked firewall rules and about everything else I can think of. I'm hoping someone here has some ideas. Let me know if more info is needed and I'll get it to you.