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Latest Comments

Hi @IanMcDonald In addition to the questions already posed by JSC-HFT about sending all outbound external email via separate security gateways (that’s what we do), I have some additional questions: 1. Does the ERR apply to outbound external emails generated by mailbox level forwarding to external se...
1 Likes
From my understanding client submission refers to TCP 587.https://learn.microsoft.com/en-us/exchange/mail-flow-best-practices/how-to-set-up-a-multifunction-device-or-application-to-send-email-using-microsoft-365-or-office-365#how-to-set-up-smtp-auth-client-submission Device or Application setting Va...
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What about senders that are NOT a 'cloud-hosted Mailbox' and are an anonymous sender via connector routing out through M365, e.g. using On-Premise Exchange via hybrid connector. Are you attributing to sending SMTP address and not 'mailbox' - This needs clarification as your current statements do not...
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We use SMTP AUTH over port 587 and in my understanding, this is not "Basic auth with the Client Submission (SMTP AUTH)".Is that correct?The endpoint smtp.office365.com will still be available over port 587 after December 2025? Thanks for the clarification.
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How do I test for this change? My application runs along with powershell which involves invoking EXO. Is there a way to selectively remove ApplicationImpersonation from GlobalAdmin or ExchangeAdmin roles or DENY the role at the user level?
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