Email

How do I add SRV records for Office 365?

Configure SRV DNS records required for Office 365 / Microsoft 365 Skype for Business.

1 min read Updated 11 Apr 2026 Guide 4 of 25
On this page 2 sections
  1. First Record (_sip._tls)
  2. Second Record (_sipfederationtls._tcp)

Users can locate the DNS management tool through two paths:

  • For domains registered with Mandraled: via the "Manage Domains" section
  • For domains assigned to hosting packages: through "Manage Hosting" → select package → "Manage DNS"

First Record (_sip._tls)

  • Type: SRV
  • Name: _sip._tls
  • Data: sipdir.online.lync.com
  • Priority: 100
  • Weight: 1
  • Port: 443

Second Record (_sipfederationtls._tcp)

  • Type: SRV
  • Name: _sipfederationtls._tcp
  • Data: sipfed.online.lync.com
  • Priority: 100
  • Weight: 1
  • Port: 5061

After entering both records, save by clicking "Update DNS." Propagation occurs almost instantly but may require up to two minutes.

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