Exchange 2016 Environment DNS entries help
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@Mr-Jones - check your firewall and make sure port 25 is forwarding to your Exchange server.
Try https://canyouseeme.org/ and check port 25
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Also, have a look at https://mxtoolbox.com/
That has a heap of tools for troubleshooting, and will check your external DNS records too. -
@syko24 That's not going to help me atm, as I'm tunneled in, but it's a good resource and I appreciate that.
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@nadnerB yea. I've been using that, but I'm guessing I need to sign up for something, because it's not telling me much. Definitely less descriptive that nslookup unless I just don't know how to use it which is a great possibility.
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@Mr-Jones - on mxtoolbox just type in the search line:
tcp:mail.mydomain.com:25
Press enter and see if it says the port is open.
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check your firewall and make sure port 25 is forwarding to your Exchange server.
Going to look into that for sure. Thank you!
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@syko24 said in Exchange 2016 Environment DNS entries help:
@Mr-Jones - on mxtoolbox just type in the search line:
tcp:mail.mydomain.com:25
Press enter and see if it says the port is open.
Thanks. It throws an "unable to connect" and then lists the GoDaddy IPv4 address that's associated with the A record of mail.mydoamin.com
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@Mr-Jones said in Exchange 2016 Environment DNS entries help:
@syko24 said in Exchange 2016 Environment DNS entries help:
@Mr-Jones - on mxtoolbox just type in the search line:
tcp:mail.mydomain.com:25
Press enter and see if it says the port is open.
Thanks. It throws an "unable to connect" and then lists the GoDaddy IPv4 address that's associated with the A record of mail.mydoamin.com
So either a firewall issue or your isp may be blocking port 25. Is this business internet with a static ip?
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So either a firewall issue or your isp may be blocking port 25. Is this business internet with a static ip?
Yes. Time to look at the Firewall.
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@Mr-Jones said in Exchange 2016 Environment DNS entries help:
So either a firewall issue or your isp may be blocking port 25. Is this business internet with a static ip?
Yes. Time to look at the Firewall.
and check your NAT settings ^^
