[Mailer] [Mailgun] Fix sender header encoding #53667
Merged
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
This adjustment fixes a problem with header encoding in MailgunApiTransport.
The issue occurs only in some cases when using Sender Address with name part with diacritics, because of the difference in encoding of UnstructuredHeader and MailboxHeader.
It changes the method used to add header
h:Sender
so that MailboxHeader is used.