When we sign up for office 365, and register a domain, we would need to setup various DNS records in our public DNS to use that domain for office365 services, below are the type of records we would be settings up when we setup a new domain in O365.
MX records
Priority | Host name | Points to address or value | TTL |
0 | @ | LetsExchange-in.mail.protection.outlook.com | 3600 |
CNAME records
Host name | Points to address or value | TTL |
autodiscover | autodiscover.outlook.com | 3600 |
sip | sipdir.online.lync.com | 3600 |
lyncdiscover | webdir.online.lync.com | 3600 |
msoid | clientconfig.microsoftonline-p.net | 3600 |
enterpriseregistration | enterpriseregistration.windows.net | 3600 |
enterpriseenrollment | enterpriseenrollment.manage.microsoft.com | 3600 |
TXT records
TXT name | TXT value | TTL |
@ | v=spf1 include:spf.protection.outlook.com -all | 3600 |
SRV records
Service | Protocol | Port | Weight | Priority | Name | Target | TTL |
_sip | _tls | 443 | 1 | 100 | @ | sipdir.online.lync.com | 3600 |
_sipfederationtls | _tcp | 5061 | 1 | 100 | @ | sipfed.online.lync.com | 3600 |
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