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Hi, I have an OpenSMTPD / Dovecot installation on an OpenBSD server. I recently came across an issue where Dovecot LMTP would reject a message sent to a local user from an address which contains a single apostrophe (e.g. firstname.o'lastname at example.com). Apparently apostrophe, as well as a number of other special characters, are valid characters in the local part of the email address

...9;lastname at example.com> to=<me at example.org> rcpt=<me at example.org> user=me delay=0s result=PermFail stat=Error ("mail.lmtp: LMTP server error: 501 5.5.4 Invalid FROM: Invalid character in localpart") That's essentially the same bug as mentioned in <6386018f-22b2-9562-b5a2-36e81cbe2892 at debian.org> (bounces on invalid UTF-8 in localpart) that got assigned DOP-1045. Dovecot LDA and LMTP should just not care about remote address validity when delivering locally. It's not the LDA's business.

...e at example.com> to=<me at example.org> rcpt=<me at example.org> user=me delay=0s result=PermFail stat=Error ("mail.lmtp: LMTP server error: 501 5.5.4 Invalid FROM: Invalid character in localpart") > > That's essentially the same bug as mentioned in <6386018f-22b2-9562-b5a2-36e81cbe2892 at debian.org> (bounces on invalid UTF-8 in localpart) that got assigned DOP-1045. Dovecot LDA and LMTP should just not care about remote address validity when delivering locally. It's not the LDA's business. Ah, thanks a lot for that. I was trying to find any inf...

Hi list. I'm using dovecot as postfix's LDA. The version is 2.3.6. Last week some spammer set the envelope's FROM to "foo at bar@domain.com" (with two @). While trying to deliver (as this one didn't hit the spamassassin's score), dovecot said the following: Jun 21 02:35:58 mymailserver postfix/pipe[29736]: ADA268195E: to=<user at mydomain>, relay=dovecot,