Hi, I have just made a non-maintainer upload (libesmtp/1.0.6-4.1) to DELAYED/5-day. If necessary, feel free to reschedule or cancel my upload.
The simple change I made can be found in my Github fork at <https://github.com/hillu/libesmtp>. I have verified that the libesmtp6 package (built using sbuild) indeed depends on libssl1.1. Cheers, -Hilko