Dear Maintainer,
autopostgresqlbackup uses 'mail -s' to send logs by mail. The package
currently depends on heirloom-mailx, but heirloom-mailx does no longer
provide a /usr/bin/mail alternative since the move to s-nail. See [1]
and [2] for more information.
I suggest that the "Depends: heirloom-mailx | biabam | mutt" be changed
to "Depends: mailx | biabam | mutt", which makes use of the virtual
package mailx, currently provided by bsd-mailx and mailutils.
[1]: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=858080
[2]: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=847049
Cheers,
- Roland