recipient delimiters

Since many broken websites and idiot companies will not allow a ‘+’ in an email address, I have long used two delimiters in postfix:

recipient_delimiter = +_

However, now that dovecot is handling verification for postfix via reject_unverified_recipient, dovecot complains about any address using an _ as a delimiter.

I don’t see a way to tell dovecot what delimiters to use, and it appears it is still using a single delimiter only despite postfix having added support for more than one years ago.

Anything that I can do in dovecot to 1) validate these emails and 2) treat user_extension the same as user+extension at delivery?

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