Problem connecting to SMTP server
Posted: Wed Oct 05, 2016 11:14 am
I'm having a problem getting the Mail Server to work. I have a domain name set up with a correct MX record. To make things simple I'm using Thunderbird on the same local network as my AS3202t. Server settings are simply the local IP address of the NAS / mail server. I if i check for mail, it's able to successfully log in and reports no new messages, which is correct. When I attempt to send an email, I get an error message that says "Mail server responded 4.7.1<email_address>:Relay access denied." I have get this same message with Mail Server SMTP port set to 25, with or without SSL Port 465 enabled. I also get this same message whether or not SMTP Relay Server is enabled or disabled. I've tried enabling the Relay server using smtp.live.com for the relay server, and then my appropriate hotmail.com email credentials. I've also tried using a gmail relay server with my gmail account credentials, and I get the same error messages no matter what settings I try.
If I try to connect to the mail server from outside my local network, using my domain name, I'm again able to connect to check mail without any error messages, but when I attempt to send an email, I get a message saying "Connection to the outgoing server (SMTP) timed out". Any suggestions? I have Comcast for my ISP and suspect they may be blocking port 25. Is the Mail Server able to use port 587? FWIW, I do have port 25 and 587 forwarded on my router. A port scan on my public IP does not show port 25 open, and port 587 shows that it's filtered. Any help would be greatly appreciated.
If I try to connect to the mail server from outside my local network, using my domain name, I'm again able to connect to check mail without any error messages, but when I attempt to send an email, I get a message saying "Connection to the outgoing server (SMTP) timed out". Any suggestions? I have Comcast for my ISP and suspect they may be blocking port 25. Is the Mail Server able to use port 587? FWIW, I do have port 25 and 587 forwarded on my router. A port scan on my public IP does not show port 25 open, and port 587 shows that it's filtered. Any help would be greatly appreciated.