![]() In this case, troubleshoot your network settings: If the Barracuda Message Archiver is not accessible, either due to port 25 being blocked or incorrectly configured on the firewall, the attempt to telnet simply hangs at Trying.You can test this by attempting to telnet to the Barracuda Message Archiver on port 25. ![]() Additionally, you can optionally have a public DNS record. To journal mail directly from Microsoft 365 to your Barracuda Message Archiver, you must have a public IP address and port 25 open and NATed to the Barracuda Message Archiver. Ensure Public Access to Port 25 on the Barracuda Message Archiver ![]()
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