Free/Busy issue between and two Exchange on Line organizations, one hybrid

%3CLINGO-SUB%20id%3D%22%5C%26quot%3Blingo-sub-3159184%5C%26quot%3B%22%20slang%3D%22%5C%26quot%3Ben-US%5C%26quot%3B%22%3EFree%2FBusy%20issue%20between%20and%20two%20Exchange%20on%20Line%20organizations%2C%20one%20hybrid%26lt%3B%5C%2Flingo-sub%26gt%3B%3CLINGO-BODY%20id%3D%22%5C%26quot%3Blingo-body-3159184%5C%26quot%3B%22%20slang%3D%22%5C%26quot%3Ben-US%5C%26quot%3B%22%3E%3CP%3EHello%2C%26lt%3B%5C%2FP%26gt%3B%3C%2FP%3E%3CP%3Ehere%20is%20my%20scenario.%20I%20opened%20this%20question%20to%20the%20M365%20support%20teams%2C%20but%20it%20has%20been%20closed%20withou%20being%20solved%2C%20so%20I'm%20trying%20to%20ask%20the%20same%20to%20the%20community.%26lt%3B%5C%2FP%26gt%3B%3CUL%3E%3CLI%3EContoso.com%20is%20a%20cloud%20only%20Exchange%20on%20line%20organization%26lt%3B%5C%2FLI%26gt%3B%3C%2FLI%3E%3CLI%3EFabrikam.com%20is%20a%20Hybrid%20Exchange%20on%20line%20organization%20with%20HCW%20classic%20full%20and%20and%20Exchange%202016%20on-prems%20server.%20Of%20course%2C%20autodiscover%20references%20the%20on-prems%20Exchange%20server.%26lt%3B%5C%2FLI%26gt%3B%3C%2FLI%3E%3CLI%3EThere%20are%20a%20federation%20trusts%20and%20Organization%20relationships%20between%20Contoso.com%20%26lt%3B-%26gt%3B%20Fabrikam.com%20(EOL)%20and%26nbsp%3BContoso.com%20%26lt%3B-%26gt%3B%20Fabrikam.com%20(EOP)%26lt%3B%5C%2FLI%26gt%3B%3C%2FLI%3E%3CLI%3EuserC1%20is%20a%20mailbox%20user%20in%20Contoso%26lt%3B%5C%2FLI%26gt%3B%3C%2FLI%3E%3CLI%3EuserF1%20is%20a%20mailbox%20user%20in%20Fabrikam%20(EOP)%26lt%3B%5C%2FLI%26gt%3B%3C%2FLI%3E%3CLI%3EuserF2%20is%20a%20mailbox%20user%20in%20Fabrikam%20(EOL)%26lt%3B%5C%2FLI%26gt%3B%26lt%3B%5C%2FUL%26gt%3B%3CP%3EThis%20is%20the%20issue%3A%26lt%3B%5C%2FP%26gt%3B%3C%2FP%3E%3CP%20data-unlink%3D%22%5C%26quot%3Btrue%5C%26quot%3B%22%3EEmail%20address%20removed%26nbsp%3B%26nbsp%3Bis%20trying%20to%20get%20Free%2Fbusy%20informations%20of%20a%20userF1%20calling%20the%20primary%20SMTP%20address%20Email%20address%20removed%26nbsp%3Bsuccessfully%26lt%3B%5C%2FP%26gt%3B%3C%2FP%3E%3CP%20data-unlink%3D%22%5C%26quot%3Btrue%5C%26quot%3B%22%3EEmail%20address%20removed%26nbsp%3B%26nbsp%3Bis%20trying%20to%20get%20Free%2Fbusy%20informations%20of%20a%20userF2%20calling%20the%20primary%20SMTP%20address%20Email%20address%20removed%26nbsp%3BNOT%20successfully%20(in%20remote%20connectivity%20analyser%20I%20can%20see%20the%20redirect%20to%20the%20target%20address%20to%20domain%20fabrikam.mail.onmicrosoft.com%26lt%3B%5C%2FP%26gt%3B%3C%2FP%3E%3CP%20data-unlink%3D%22%5C%26quot%3Btrue%5C%26quot%3B%22%3EEmail%20address%20removed%26nbsp%3B%26nbsp%3Bis%20trying%20to%20get%20Free%2Fbusy%20informations%20of%20a%20userF2%20calling%20the%20primary%20SMTP%20address%20Email%20address%20removed%26nbsp%3Bsuccessfully%26lt%3B%5C%2FP%26gt%3B%3C%2FP%3E%3CP%20data-unlink%3D%22%5C%26quot%3Btrue%5C%26quot%3B%22%3E%26nbsp%3B%26lt%3B%5C%2FP%26gt%3B%3C%2FP%3E%3CP%20data-unlink%3D%22%5C%26quot%3Btrue%5C%26quot%3B%22%3EI%20think%20I%20must%20have%20maid%20some%20mistakes%2C%20because%20I%20think%20it%20is%20not%20possible%20that%20MS%20has%20not%20treat%20this%20scenario.%20May%20someone%20help%20me%20showing%20me%20how%20can%20I%20solve%20it%3F%26lt%3B%5C%2FP%26gt%3B%3C%2FP%3E%3CP%20data-unlink%3D%22%5C%26quot%3Btrue%5C%26quot%3B%22%3E%26nbsp%3B%26lt%3B%5C%2FP%26gt%3B%3C%2FP%3E%3CP%20data-unlink%3D%22%5C%26quot%3Btrue%5C%26quot%3B%22%3EThank%20you%2C%26lt%3B%5C%2FP%26gt%3B%3C%2FP%3E%3CP%20data-unlink%3D%22%5C%26quot%3Btrue%5C%26quot%3B%22%3E%26nbsp%3B%26lt%3B%5C%2FP%26gt%3B%3C%2FP%3E%3CP%20data-unlink%3D%22%5C%26quot%3Btrue%5C%26quot%3B%22%3EEnrico%26lt%3B%5C%2FP%26gt%3B%3C%2FP%3E%3CP%20data-unlink%3D%22%5C%26quot%3Btrue%5C%26quot%3B%22%3E%26nbsp%3B%26lt%3B%5C%2FP%26gt%3B%26lt%3B%5C%2Flingo-body%26gt%3B%3CLINGO-LABS%20id%3D%22%5C%26quot%3Blingo-labs-3159184%5C%26quot%3B%22%20slang%3D%22%5C%26quot%3Ben-US%5C%26quot%3B%22%3E%3CLINGO-LABEL%3EExchange%26lt%3B%5C%2Flingo-label%26gt%3B%26lt%3B%5C%2Flingo-labs%26gt%3B%3C%2FLINGO-LABEL%3E%3C%2FLINGO-LABS%3E%3C%2FP%3E%3C%2FLI%3E%3C%2FUL%3E%3C%2FP%3E%3C%2FLINGO-BODY%3E%3C%2FLINGO-SUB%3E%3CLINGO-SUB%20id%3D%22lingo-sub-3159184%22%20slang%3D%22en-US%22%3EFree%2FBusy%20issue%20between%20and%20two%20Exchange%20on%20Line%20organizations%2C%20one%20hybrid%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-3159184%22%20slang%3D%22en-US%22%3E%3CP%3EHello%2C%3C%2FP%3E%3CP%3Ehere%20is%20my%20scenario.%20I%20opened%20this%20question%20to%20the%20M365%20support%20teams%2C%20but%20it%20has%20been%20closed%20withou%20being%20solved%2C%20so%20I'm%20trying%20to%20ask%20the%20same%20to%20the%20community.%3C%2FP%3E%3CUL%3E%3CLI%3EContoso.com%20is%20a%20cloud%20only%20Exchange%20on%20line%20organization%3C%2FLI%3E%3CLI%3EFabrikam.com%20is%20a%20Hybrid%20Exchange%20on%20line%20organization%20with%20HCW%20classic%20full%20and%20and%20Exchange%202016%20on-prems%20server.%20Of%20course%2C%20autodiscover%20references%20the%20on-prems%20Exchange%20server.%3C%2FLI%3E%3CLI%3EThere%20are%20a%20federation%20trusts%20and%20Organization%20relationships%20between%20Contoso.com%20%26lt%3B-%26gt%3B%20Fabrikam.com%20(EOL)%20and%26nbsp%3BContoso.com%20%26lt%3B-%26gt%3B%20Fabrikam.com%20(EOP)%3C%2FLI%3E%3CLI%3EuserC1%20is%20a%20mailbox%20user%20in%20Contoso%3C%2FLI%3E%3CLI%3EuserF1%20is%20a%20mailbox%20user%20in%20Fabrikam%20(EOP)%3C%2FLI%3E%3CLI%3EuserF2%20is%20a%20mailbox%20user%20in%20Fabrikam%20(EOL)%3C%2FLI%3E%3C%2FUL%3E%3CP%3EThis%20is%20the%20issue%3A%3C%2FP%3E%3CP%20data-unlink%3D%22true%22%3EEmail%20address%20removed%26nbsp%3B%26nbsp%3Bis%20trying%20to%20get%20Free%2Fbusy%20informations%20of%20a%20userF1%20calling%20the%20primary%20SMTP%20address%20Email%20address%20removed%26nbsp%3Bsuccessfully%3C%2FP%3E%3CP%20data-unlink%3D%22true%22%3EEmail%20address%20removed%26nbsp%3B%26nbsp%3Bis%20trying%20to%20get%20Free%2Fbusy%20informations%20of%20a%20userF2%20calling%20the%20primary%20SMTP%20address%20Email%20address%20removed%26nbsp%3BNOT%20successfully%20(in%20remote%20connectivity%20analyser%20I%20can%20see%20the%20redirect%20to%20the%20target%20address%20to%20domain%20fabrikam.mail.onmicrosoft.com%3C%2FP%3E%3CP%20data-unlink%3D%22true%22%3EEmail%20address%20removed%26nbsp%3B%26nbsp%3Bis%20trying%20to%20get%20Free%2Fbusy%20informations%20of%20a%20userF2%20calling%20the%20primary%20SMTP%20address%20Email%20address%20removed%26nbsp%3Bsuccessfully%3C%2FP%3E%3CP%20data-unlink%3D%22true%22%3E%26nbsp%3B%3C%2FP%3E%3CP%20data-unlink%3D%22true%22%3EI%20think%20I%20must%20have%20maid%20some%20mistakes%2C%20because%20I%20think%20it%20is%20not%20possible%20that%20MS%20has%20not%20treat%20this%20scenario.%20May%20someone%20help%20me%20showing%20me%20how%20can%20I%20solve%20it%3F%3C%2FP%3E%3CP%20data-unlink%3D%22true%22%3E%26nbsp%3B%3C%2FP%3E%3CP%20data-unlink%3D%22true%22%3EThank%20you%2C%3C%2FP%3E%3CP%20data-unlink%3D%22true%22%3E%26nbsp%3B%3C%2FP%3E%3CP%20data-unlink%3D%22true%22%3EEnrico%3C%2FP%3E%3CP%20data-unlink%3D%22true%22%3E%26nbsp%3B%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-LABS%20id%3D%22lingo-labs-3159184%22%20slang%3D%22en-US%22%3E%3CLINGO-LABEL%3EExchange%3C%2FLINGO-LABEL%3E%3C%2FLINGO-LABS%3E
New Contributor

Hello,

here is my scenario. I opened this question to the M365 support teams, but it has been closed withou being solved, so I'm trying to ask the same to the community.

  • Contoso.com is a cloud only Exchange on line organization
  • Fabrikam.com is a Hybrid Exchange on line organization with HCW classic full and and Exchange 2016 on-prems server. Of course, autodiscover references the on-prems Exchange server.
  • There are a federation trusts and Organization relationships between Contoso.com <-> Fabrikam.com (EOL) and Contoso.com <-> Fabrikam.com (EOP)
  • userC1 is a mailbox user in Contoso
  • userF1 is a mailbox user in Fabrikam (EOP)
  • userF2 is a mailbox user in Fabrikam (EOL)

This is the issue:

UserC1  is trying to get Free/busy informations of a userF1 calling the primary SMTP address userf1 <at>fabriam.com successfully

UserC1  is trying to get Free/busy informations of a userF2 calling the primary SMTP address userf2 <at>fabriam.com NOT successfully (in remote connectivity analyser I can see the redirect to the target address to domain fabrikam.mail.onmicrosoft.com

UserC1 is trying to get Free/busy informations of a userF2 calling the alias SMTP address userf2<at>fabrikam.mail.onmicrosoft.com successfully

 

I think I must have made some mistakes, because I think it is not possible that MS has not treat this scenario. May someone help me showing me how can I solve it?

 

Thank you,

 

Enrico

 

1 Reply
Per tutti quelli che hanno lo stesso problema, sono giunto alla conclusione che non è risolvibile.
To Whom who are facing the same issue, I conclude it's not resolvable.
https://techcommunity.microsoft.com/t5/exchange-team-blog/the-hybrid-mesh/ba-p/605910

:(

Enrico