This article describes how to set up DNS for the Skype for Business offering from Thexyz with both Office 365 and Microsoft Exchange. Please refer to either Office 365 or Exchange guides for setting up DNS. If you are unsure about this, please contact support for assistance.
If you are using Skype for Business with Office 365, you can use the records in the tables below.
Office 365 Skype for Business
| Type | Hostname | Destination | Time to live (TTL) |
|---|---|---|---|
| CNAME | autodiscover.example.com | autodiscover.outlook.com | Lowest possible |
| CNAME | lyncdiscover.example.com | webdir.online.lync.com | Lowest possible |
| CNAME | sip.example.com | sipdir.online.lync.com | Lowest possible |
| Type | Host | Destination | Service | Protocol | Port | |
|---|---|---|---|---|---|---|
| SRV | example.com | sipfed.online.lync.com | _sipfederationtls | _tcp | 5061 | 5061 |
| SRV | example.com | sipdir.online.lync.com | _sip | _tls | 443 |
If you know exactly which Exchange environment your domain is hosted on, you can locate your specific records in the tables below. If you are not sure on the version of Exchange server you are using. The email help setup tool will be able to tell you.
mex06.emailsrvr.com
| Type | Hostname | Destination | Time to live (TTL) |
|---|---|---|---|
| CNAME | autodiscover.example.com | autodiscover.emailsrvr.com | Lowest possible |
| CNAME | lyncdiscover.example.com | lyncdiscover.mex06.emailsrvr.com | Lowest possible |
| CNAME | sip.example.com | sip.mex06.emailsrvr.com | Lowest possible |
| Type | Host | Destination | Service | Protocol | Port | |
|---|---|---|---|---|---|---|
| SRV | example.com | lync01.mex06.emailsrvr.com | _sipfederationtls | _tcp | 5061 | |
| SRV | example.com | sip.mex06.emailsrvr.com | _sip | _tls | 5061 |
mex08.emailsrvr.com
| Type | Hostname | Destination | Time to live (TTL) |
|---|---|---|---|
| CNAME | autodiscover.example.com | autodiscover.emailsrvr.com | Lowest possible |
| CNAME | lyncdiscover.example.com | lyncdiscover.mex08.emailsrvr.com | Lowest possible |
| CNAME | sip.example.com | sip.mex08.emailsrvr.com | Lowest possible |
| Type | Host | Destination | Service | Protocol | Port | |
|---|---|---|---|---|---|---|
| SRV | example.com | lync01.mex08.emailsrvr.com | _sipfederationtls | _tcp | 5061 | |
| SRV | example.com | sip.mex08.emailsrvr.com | _sip | _tls | 5061 |
mex09.emailsrvr.com
| Type | Hostname | Destination | Time to live (TTL) |
|---|---|---|---|
| CNAME | autodiscover.example.com | autodiscover.emailsrvr.com | Lowest possible |
| CNAME | lyncdiscover.example.com | lyncdiscover.mex09.emailsrvr.com | Lowest possible |
| CNAME | sip.example.com | sip.mex09.emailsrvr.com | Lowest possible |
| Type | Host | Destination | Service | Protocol | Port | |
|---|---|---|---|---|---|---|
| SRV | example.com | lync01.mex09.emailsrvr.com | _sipfederationtls | _tcp | 5061 | |
| SRV | example.com | sip.mex09.emailsrvr.com | _sip | _tls | 5061 |
| sipdir.online.lync.com |
