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OOF to personal emails dropped at EOP relay
Issue: When an OutOfOffice recipient is gmail.com, outlook.com, msn.com ,etc, relay is dropped by EOP. Oof is delivered when recipient is an M365 tenant. Any other mail flows no issues to gmail and other personal addresses as well. It's only OOF to personal addresses. Env: Exch 2016 with EOP send/receive (hybrid manually, not hcw) We found 2 blog posts might be relevant, but these instructions did not resolve: https://techcommunity.microsoft.com/blog/Exchange/updated-requirements-for-smtp-relay-through-exchange-online/3851357 https://techcommunity.microsoft.com/blog/exchange/enhanced-filtering-for-connectors---improving-deliverability-and-minimizing-fals/4160483 This is what we see on the smtp protocol log: >,MAIL FROM:<> SIZE=7072, >,RCPT TO:<****@gmail.com> NOTIFY=NEVER, <,250 2.1.0 Sender OK, <,550 5.7.64 TenantAttribution; Relay Access Denied [*****.eurprd03.prod.outlook.com 2025-01-04T14:03:21.934Z *****], >,QUIT, ### We also looked into dkim, but finally found this line: By design, Exchange Online Protection uses the high risk delivery pool (HRDP) to send OOF replies, because OOF replies are lower-priority messages. https://learn.microsoft.com/en-us/exchange/troubleshoot/email-delivery/understand-troubleshoot-oof-replies#what-are-out-of-office-replies We feel this is not likely a connector or ceritifcate or onprem issue, rather something with HRDP and OOF in EOP. Could you confirm we are on the right track now? If not the Exchange Team can help please let me know who. Thanks
Exchange Online Powershell not connecting in scheduled Task script
Hello everyone, I am having this issue where I can't find any useful answer. We are connecting to Exchange Online with certificate based authentication and it works fine when we run the script manually. Running the script via scheduled task with the same user, we always receive the following error messages. PS>TerminatingError(Get-ConnectionContext): "One or more errors occurred." PS>TerminatingError(): "An error occurred while sending the request." An error occurred while sending the request. At C:\Program Files\WindowsPowerShell\Modules\ExchangeOnlineManagement\3.5.0\netFramework\Exchange OnlineManagement.psm1:762 char:21 + throw $_.Exception.InnerException; + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : OperationStopped: (:) [], HttpRequestException + FullyQualifiedErrorId : An error occurred while sending the request. This is the command we use to connect: Connect-ExchangeOnline -AppId $AppId -CertificateThumbprint $CertificateThumbprint -Organization $Organization -ShowBanner:$false -loglevel all Has anyone experienced this before? ExchangeOnlineManagement Module is Version 3.5.0 Powershell Version is5.1.14393.7155Exchange Online courses
Hello all, Since Microsoft ended the MS-203 certification and courses, there is no training available anymore. On the Micorosft Learn website there aren't courses about Exchange 365; only the 'manage complaince in Exchange 365'. Does any of you know if there will be a new training for Exchange 365 soon? Where do you find courses for Exchange 365 (and Defender for Office/Exchange). Kind regards, Arjan
Move request falsely stuck
We are migrating mailboxes cross forest between two Exchange organizations and are having an issue with 3 of them. We were migrating these 3 mailboxes when the target Exchange server had the log disk filling-up, and move request seemed to be stuck. We extended the disk and the move actually completed, we check the get-moverequest for "non completed" and none was reported. We move the mailbox database, on the target DAG, between the two hosts and then, not sure if it's related, the get-moverequest reported three entries in "waitingforjobpickup" even if the migrationa has successfully completed, the mailbox is active on the destination and users are connecting without issue. How can we clear the status correctly or we just can delete the move request ? thanks SC
Unable to change mailbox permissions
Hi, We have inherited a Hybrid Exchange environment. It consists of 1 on-prem Exchange Server (Version 15.0 (Build 1473.3)) and M365. All the mailboxes have been migrated to M365 and ADSync is present to replicate to M365. The issue we have is that even as a Global and Exchange admin in M365, we are unable to edit the permissions of any users mailbox. Doing this via the M365 admin centre just returns a message saying "Something Went Wrong." If we try it in Powershell we get a "User is not allowed to call" message. We are trying to understand if this is an issue with M365 or we are trying to make the permission change from the wrong location? In a hybrid environment where all mailboxes have been migrated, from where you should you make permission changes to a mailbox? Is there something else we are doing wrong here? Thanks DB
User is unable to login to Mailbox
Hello experts, We are in Hybrid environment and one of the user which was recently re-enabled an AD account as the user is returned back to us, is unable to login to mailbox Steps we done Re-enabled the AD account and moved it to syncing OU and added license to enable mailbox I checked the recipient details in both on-prem and online On-prem results RecipientType : MailUser RecipientTypeDetails : RemoteUserMailbox Online results RecipientType : UserMailbox RecipientTypeDetails : UserMailbox What is the part that is missing here.MS Exchange SE 2025
Recently, I came to know that MS will next Exchange in Subscription Edition (https://techcommunity.microsoft.com/discussions/exchange_general/exchange-server-subscription-edition-arrives-in-summer-2025/4133577). The MS exchange 2025 will be the update of 2016 and 2019 version and 2016 and 2019 support will be the end of 2025. My query is new MS Exchange 2025 SE will be on-prem or cloud-based. If it is cloud-based, then the Active Director will be cloud-based, too. Can anyone clarify me those things.Exchange Hybrid Wizard Error
Hi, At the final step of the Hybrid Wizard (Validating Hybrid Agent for Exchange usage), I am getting this error message. I've searched for this error and cannot find the correct fix. Thanks. The log files show his error: *ERROR* 10349 [Client=UX, Page=HybridConnectorInstall, Thread=15] The connection to the server 'fdde59f1-85fd-48b6-bbe4-0bf434e02b29.resource.mailboxmigration.his.msappproxy.net' could not be completed., The call to 'https://fdde59f1-85fd-48b6-bbe4-0bf434e02b29.resource.mailboxmigration.his.msappproxy.net/EWS/mrsproxy.svc' timed out. Error details: The request channel timed out attempting to send after 00:00:00.0077217. Increase the timeout value passed to the call to Request or increase the SendTimeout value on the Binding. The time allotted to this operation may have been a portion of a longer timeout. --> The HTTP request to 'https://fdde59f1-85fd-48b6-bbe4-0bf434e02b29.resource.mailboxmigration.his.msappproxy.net/EWS/mrsproxy.svc' has exceeded the allotted timeout of 00:00:00.0077217. The time allotted to this operation may have been a portion of a longer timeout., The request channel timed out attempting to send after 00:00:00.0077217. Increase the timeout value passed to the call to Request or increase the SendTimeout value on the Binding. The time allotted to this operation may have been a portion of a longer timeout., The HTTP request to 'https://fdde59f1-85fd-48b6-bbe4-0bf434e02b29.resource.mailboxmigration.his.msappproxy.net/EWS/mrsproxy.svc' has exceeded the allotted timeout of 00:00:00.0077217. The time allotted to this operation may have been a portion of a longer timeout.
