Hi Everyone

I have problem about Lync 2013 and I'm so new about Office 365. My problem is I can't sign-in Lync 2013 from only internal site but if I used config manual sipdir.online.lync.com:443 both Internal and External, it will be fine. Thus, I don't know that it is because of my internal dns block something or I need to add some internal DNS record for pointing Lync client to point out from internal site ?. Please advice me to solve this problem.

Thank you very much

Khun J.

Hi

Did you created the DNS records?

Check this

https://support.microsoft.com/kb/2566790?wa=wsignin1.0

If this still resolves the issue. please post your Question in O365 forum

http://community.office365.com/en-us/f/166.aspx

Hi Raju_raju

Do you mean I need to add these records to my internal DNS isn't it ? if yes, would mind to tell me some example of SRV records. I do not understand about this name "<DomainName></DomainName>"

can you ping lyncdiscover.domain.com from internal domain?. Lync 2013 use Lyncdiscover as a priority in the autodiscover process. The SRV records are the least priority. The ones that you need to reach are sip.domain.com and lyncdiscover.domain.com. Try creating CNAME records internally in DNS which resolve to sipdir and webdir and see if that fix the issue.

Hi khunJ,

If you have a firewall that blocks external SRV queries, add these entries to your internal DNS server as well:

If it still does not work, you can check out the following guide to troubleshoot your problem.

https://support.microsoft.com/kb/2541980?wa=wsignin1.0

Best regards,

Eric

Hi khunJ,

If you have a firewall that blocks external SRV queries, add these entries to your internal DNS server as well:

If it still does not work, you can check out the following guide to troubleshoot your problem.

https://support.microsoft.com/kb/2541980?wa=wsignin1.0

Best regards,

Eric

• Marked as answer by Eric_YangKModerator 23 hours 43 minutes ago