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Pascal Wenders's avatar
Pascal Wenders
Brass Contributor
Nov 25, 2020

Remote Server returned '550 5.1.11 RESOLVER.ADR.ExRecipNotFound; Recipient not found by Exchange Leg

We have user that has in two different Hybrid exchange environments an account. Within Outlook there is configured for both the exchage enviroments an account. Exp. user@contoso.org and  mailto:user@...
2016
exchange online
Exchange Server
hybrid
outlook
Pierfish's avatar
Pierfish
Icon for Microsoft rankMicrosoft
Nov 30, 2020

Pascal Wenders ha ve you tried to empty the autocompletion list in Outlook or to disable the autocomplete list in outlook options ?