Forum Discussion
Insert Custom Message Header value in an email
Hello, Environment: Exchange Online Is it possible to Insert Custom value in the Message Header of an email? Regards, Dematri
Yes, via Transport rules: https://docs.microsoft.com/en-us/exchange/security-and-compliance/mail-flow-rules/mail-flow-rule-actions
Thanks Vasil....
Sorry I should have added earlier -
Is it possible to add the sender address to an existing message header value (type: X-Protective)
Here, sender address will change based on the sender id.
Any suggestion will be of great help.
In general yes, but depends on the header. Some headers will be stripped/overwritten by the server, you cannot for example "forge" and antispam header, etc.
Any article that you shared that provides the approach of how to get it tested?
