O365 Exchange - MAILS ARE ALWAYS RECEIVED AS PLAIN TEXT INSTEAD OF HTML FORMAT

%3CLINGO-SUB%20id%3D%22lingo-sub-389848%22%20slang%3D%22en-US%22%3EO365%20Exchange%20-%20MAILS%20ARE%20ALWAYS%20RECEIVED%20AS%20PLAIN%20TEXT%20INSTEAD%20OF%20HTML%20FORMAT%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-389848%22%20slang%3D%22en-US%22%3E%3CP%3EWe%20have%20a%20user%20where%26nbsp%3BMAILS%20from%20user%40contoso.com%20ARE%20ALWAYS%20RECEIVED%20AS%20PLAIN%20TEXT%20INSTEAD%20OF%20HTML%20FORMAT.%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3Eother%20users%20receives%20the%20mails%20from%26nbsp%3Buser%40contoso.com%20HTML%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3Emails%20sent%20by%26nbsp%3Buser%40contoso.com%20are%20in%20HTML%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3ERead%20all%20standard%20mail%20in%20plain%20text%20is%20unchecked%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EWe%20are%20using%20MAPI%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EAny%20known%20issue%20%2F%20fix%3F%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-LABS%20id%3D%22lingo-labs-389848%22%20slang%3D%22en-US%22%3E%3CLINGO-LABEL%3EExchange%3C%2FLINGO-LABEL%3E%3CLINGO-LABEL%3EOffice%20365%3C%2FLINGO-LABEL%3E%3C%2FLINGO-LABS%3E%3CLINGO-SUB%20id%3D%22lingo-sub-390074%22%20slang%3D%22en-US%22%3ERe%3A%20O365%20Exchange%20-%20MAILS%20ARE%20ALWAYS%20RECEIVED%20AS%20PLAIN%20TEXT%20INSTEAD%20OF%20HTML%20FORMAT%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-390074%22%20slang%3D%22en-US%22%3E%3CP%3EIf%20this%20happens%20to%20a%20single%20user%20only%2C%20have%20them%20delete%20any%20contact%20entries%20matching%20the%20sender's%20address%2C%20and%20clear%20their%20autocomplete%20cache.%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-1121277%22%20slang%3D%22en-US%22%3ERe%3A%20O365%20Exchange%20-%20MAILS%20ARE%20ALWAYS%20RECEIVED%20AS%20PLAIN%20TEXT%20INSTEAD%20OF%20HTML%20FORMAT%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-1121277%22%20slang%3D%22en-US%22%3E%3CP%3E%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F61448%22%20target%3D%22_blank%22%3E%40Marvin%20Oco%3C%2FA%3E%26nbsp%3B%3C%2FP%3E%3CP%3EHi%2C%20hope%20that%20you%20have%20already%20found%20a%20solution%20for%20your%20issue.%3C%2FP%3E%3CP%3EAfter%20searching%20the%20internet%20inside%20out%20for%20more%20than%2012%20hours%2C%20this%20fixed%20it%3A%3C%2FP%3E%3CP%3ESet-RemoteDomain%20Default%20-TNEFEnabled%20%24false%3C%2FP%3E%3CP%3EDetails%3A%20%3CA%20href%3D%22https%3A%2F%2Fgcits.com%2Fknowledge-base%2Fhow-to-fix-the-winmail-dat-attachment-issue%2F%22%20target%3D%22_blank%22%20rel%3D%22nofollow%20noopener%20noreferrer%20noopener%20noreferrer%20noopener%20noreferrer%22%3Ehttps%3A%2F%2Fgcits.com%2Fknowledge-base%2Fhow-to-fix-the-winmail-dat-attachment-issue%2F%3C%2FA%3E%3C%2FP%3E%3CP%3EThe%20post%20is%20old%2C%20but%20I%20still%20got%20the%20same%20issue%20in%202020%2C%20and%20it%20is%20not%20well-explained%20by%20MS%2C%20hope%20my%20reply%20makes%20life%20easier%20for%20someone%20%3A)%3C%2Fimg%3E%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-1472824%22%20slang%3D%22en-US%22%3ERe%3A%20O365%20Exchange%20-%20MAILS%20ARE%20ALWAYS%20RECEIVED%20AS%20PLAIN%20TEXT%20INSTEAD%20OF%20HTML%20FORMAT%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-1472824%22%20slang%3D%22en-US%22%3EI%20keep%20getting%20%22The%20term%20'Set-RemoteDomain'%20is%20not%20recognized%20as%20name%20of%20a%20cmdlet(...)%22%20Mensage%20even%20after%20retracing%20and%20copy-pasting%20all%20steps.%20Anyone%20had%20that%20problem%3F%3C%2FLINGO-BODY%3E
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Super Contributor

We have a user where MAILS from user@contoso.com ARE ALWAYS RECEIVED AS PLAIN TEXT INSTEAD OF HTML FORMAT.

 

other users receives the mails from user@contoso.com HTML

 

mails sent by user@contoso.com are in HTML

 

Read all standard mail in plain text is unchecked

 

We are using MAPI

 

Any known issue / fix?

 

 

3 Replies
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If this happens to a single user only, have them delete any contact entries matching the sender's address, and clear their autocomplete cache.

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@Marvin Oco 

Hi, hope that you have already found a solution for your issue.

After searching the internet inside out for more than 12 hours, this fixed it:

Set-RemoteDomain Default -TNEFEnabled $false

Details: https://gcits.com/knowledge-base/how-to-fix-the-winmail-dat-attachment-issue/

The post is old, but I still got the same issue in 2020, and it is not well-explained by MS, hope my reply makes life easier for someone :)

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I keep getting "The term 'Set-RemoteDomain' is not recognized as name of a cmdlet(...)" Mensage even after retracing and copy-pasting all steps. Anyone had that problem?