We have a [Smtpd.jsm](https://searchfox.org/comm-central/source/mailnews/test/fakeserver/Smtpd.jsm) fakeserver for testing, we don't have a test case for this bug though.
We have a [Smtpd.jsm](https:/ /searchfox. org/comm- central/ source/ mailnews/ test/fakeserver /Smtpd. jsm) fakeserver for testing, we don't have a test case for this bug though.