Forum Discussion

Copper Contributor

Jul 06, 2018

Solved

Hybrid Exchange and autodiscover

In a hybrid Exchange setup you are meant to leave the autodiscover record pointing at the onprem server. I have been going through DR planning and have realised that leaving it pointed onprem will ca...

exchange online

Exchange Server

hybrid

NunoAriasSilva
Jul 06, 2018
Hi matthew want,

If you are not using any mailbox on-premises and you do not need any on-premises autodiscover feature using your on-premises autodiscover, you can change it to Office 365.

NunoAriasSilva

MVP

Jul 06, 2018

Hi matthew want,

If you do not have any mailboxes in on-premises, you can change the autodiscover to Office 365, you only need to change it back if you need to migrate mailboxes on-premises or use the autodiscover to use in Outlook and Mobile.

Navishkar Sadheo

Iron Contributor

May 13, 2020

Hi NunoAriasSilva

I am facing the same issue. Exchange hybrid with all our mailboxes in Office 365.

Are you saying delete the local autodiscover DNS records?

I have 2. Autodiscover.ttaf.co.za and autodiscover.ttaf.local.

Both of those records point to my on-premise exchange server.

Recently we renewed the third party certificate on this server but I forgot to include autodiscover.ttaf.co.za in the certificate subject alternatives names.

Now staff members are getting certificate errors even thou their mailboxes are hosted in Office 365.

Any advice?

I thought about creating CNAME records in the ttaf.co.za and ttaf.local internal DNS zones and pointing them to autodiscover.outlook.com. Do you think that would resolve the issue?