Can I alter E mail from setting on OUTLOOK using EXCHANGE [IMAP]

Gerald J 0 Reputation points
2025-11-24T21:06:41.9066667+00:00

I notice strange FROM header on my e mails, though my standard Outlook e mail address appears on recipient's end.

I believe I can't change the Exchange settings; any suggestions valued.

I'm sole user of this PC, running WINDOWS 11.

outlook

Outlook | Windows | Classic Outlook for Windows | For home
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  1. Lucky Charm Espinosa 4,540 Reputation points Independent Advisor
    2025-11-24T21:53:20.3133333+00:00

    Hi Gerald J, I understand how annoying this can be you expect your emails to look clean and professional but instead you’re seeing that strange X.500 address in the header which feels confusing and unnecessary.

    This happens when Outlook uses an old Exchange ID instead of your email address usually because of cached contacts after a migration. To fix it clear your autocomplete cache delete outdated contacts pick your correct email when replying and if possible add the old ID as an X.500 proxy. If you’re on IMAP switch to Exchange for better compatibility.

    When you check the full message headers does the X.500 address appear only in the From field internally or do you also see it in the Reply - To or SMTP headers?

    Best regards

    Lucky Charm

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  2. Gerald J 0 Reputation points
    2025-11-25T10:13:05.58+00:00

    1/ Regards REPLY header, it's normal in that scenario :) Only appears in new e mail messages
    I create.

    • 2/ [clear your autocomplete cache delete outdated contacts pick your correct email];
      That suggestion seems to have cured the anomaly.

    Thanks

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