auto-reply autodiscover issues

Hi All,

I have a problem with auto-reply and autodiscover, i have spent a lot of team researching and reading and still cant not fix the issue that i am having.

The problem at the moment is, autodiscover does not work externally but work internally, auto-reply does not work internally or externally. I have setup SAN certificate for autodiscover.domain.com and mail and remote.

DNS: I've setup A record for autodiscover to point to our mail server.

CAS internalUri points to external
Autodiscover virtual directory internalURl and ExternalUrl  points to external https://autodiscover.domain.com.....

Thanks in advance.
Kap HengAsked:
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David Johnson, CD, MVPOwnerCommented:
at your registrar did you setup your Nameservers or an A record that points to your public ip address.  can you access your lan from outside your network?  Router with correct port forwarding, firewall rules etc.
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Kap HengAuthor Commented:
We host our own emails. so we setup an A record which points to our IP address.
Yes we can access our lan from outside the network, OWA works locally and externally.
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David Johnson, CD, MVPOwnerCommented:
from outside the lan if I do a nslookup autodiscover.example.com will it return the public ip address or the internal ip address?
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Kap HengAuthor Commented:
It returns public ip address.
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Kap HengAuthor Commented:
i've fixed it by resetting the auto discover virtual directory.
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Kap HengAuthor Commented:
Found  a website which states three things that could cause auto discover to fail. resetting the auto discover virtual directory was the third one that i haven't tried.
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