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Josh Melia
Asked: 2020-01-26 19:53:41 +0800 CST

Can't use domain name to access mail server from outside LAN

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Thanks for the assistance with my last post, it was able to work itself out nicely. Now I have another issue...

I have got an A DNS record setup pointing mail.melia.tech to my public IP address

I have got an MX DNS record setup pointing melia.tech to mail.melia.tech (so I can receive emails to addresses of the form [email protected]).

From within the LAN, I can use mail.melia.tech with Thunderbird as well as typing into my browser to access the Citadel Web Interface. I have got ports 80, 110 and 25 forwarded to the internal ip of my server.

I am having trouble accessing this mail server from outside my LAN though. I can't access the server using mail.melia.tech. I can only use my public IP address!

If I want to access the Citadel interface from my phone for example, on a mobile data network, I need to use the public IP in Safari, and as the incoming and outgoing mail server in the Mail app. If I try to use the domain name, I am told by safari that the server does not exist.

I appreciate help in advance, please let me know if there's any more info required or if my post could be changed to make a solution easier to come by.

domain-name-system ip mx-record local-area-network citadel

1 Answers

  1. Not sure if it was just a time thing or whether my tinkering did the trick - it seems to be working now. I can point my phone to my domain name from outside my LAN and access my mail server.

    I went into my router settings and fixed up the IP filtering - it worked shortly after this.

    Thanks for the help!

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