Reply to email - sender replaced with distribution group as recipient

Question

User sends email to several recipient, not a distribution group. Recipient replies and original sender is replaced in To: field with distribution list that seemingly has no relationship to email thread and recipients.

Answer 1

Hi @SY_MSO

Please check the message header of the emails for the Reply-To part.
How to view message header in Outlook: View internet message headers in Outlook

If the Reply-To part shows the distribution group, the possible cause of this issue may be the senders configured Reply-To settings to have the recipients reply to a different email address.
(By default it should be the same as the sender's email address)

For example, if using Outlook it can be done in this way:

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