The SRV screen is the most daunting of all the DNS entries, and is generally only needed for advanced users. If you're setting up an auto discover service for Office 365, or Skype for Business, or another service that requires a SRV record: Don't panic! It's not quite as bad as you may think. Often, a SRV record is provided like this: _sip._tls.sipdir.online.lync.com Weight 1 (if not provided use 1) Port 443 Priority 100 (if not provided use 100) When adding it here, we need to format it like this: Subdomain: . (Example: _sip._tls) Address: :: (Example: 1:443:sipdir.online.lync.com) Priority: 100 Here's an example of how to enter a Microsoft 365 autodiscover SRV record: Subdomain: _autodiscover._tcp Address: 1:443:yourdomain.autodiscover.outlook.com Priority: 100 With this information, a mail client - for example - trying to auto detect settings, checks out your domain, it will see that for an \\"autodiscover\\" request, it should connect to yourdomain.autodiscover.outlook.com on port 443 to get the information - pretty clever!