[Pkg-privacy-maintainers] Bug#865368: torsocks: procmail spawned by mpop in torsocks fails with "Operation not permitted"

[Nick]

Package: torsocks
Version: 2.2.0-1
Severity: normal

Dear Maintainer,

I use procmail as my mda in mpop, with this line in the config file (as suggested in the documentation):
  delivery mda /usr/bin/procmail -f '%F' -d $USER

Running 'torsocks mpop' fails if there are any mails waiting to be collected, with the (example) output:
  new: 1 message in 31.02 KiB, total: 1 message in 31.02 KiB
  retrieving message 1 of 1 (31.02 KiB): sh: 1: /usr/bin/procmail: Operation not permitted
   38
  mpop: cannot write mail: output error
  mpop: error during mail retrieval (account default from /home/nick/.mpoprc)

This only started happening when I upgraded to stretch, in jessie this worked perfectly.

Running mpop not through torsocks works fine, and torsocks can write to files generally (tested with 'torsocks wget debian.org')


-- System Information:
Debian Release: 9.0
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.9.10-ph+ (SMP w/4 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE=en_GB:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages torsocks depends on:
ii  libc6  2.24-11+deb9u1

Versions of packages torsocks recommends:
ii  tor  0.2.9.11-1~deb9u1

torsocks suggests no packages.

-- no debconf information