Install guide · Ubuntu 26.04 (resolute)printed 29 Oct 2026, 02:20 UTC

Install PostSRSd 2.4 on Ubuntu 26.04

Ubuntu 26.04 ships PostSRSd 2.0.11. The current release is 2.4.1. freshdeb builds it for resolute from upstream's release with Debian's packaging, so it replaces the distribution's package in place and updates with apt upgrade like the rest of the system.

Ubuntu 26.04 ships: 2.0.112.0.11-1
main: 2.4.1follows every upstream release, minors and majors included. Currently 2.4.1.
Built for: amd64 and arm64, natively

1Trust the signing key (once per machine)

sudo install -d -m 0755 /etc/apt/keyrings
curl -fsSL https://deb.freshdeb.com/freshdeb-archive-keyring.gpg \
  | sudo tee /etc/apt/keyrings/freshdeb-archive-keyring.gpg >/dev/null

Fingerprint 3BBD F03A 9C0B F890 F8CA 9510 7595 CC55 468F 3161. How to verify.

2Add the source for resolute

sudo tee /etc/apt/sources.list.d/freshdeb-postsrsd.sources >/dev/null <<EOF
Types: deb
URIs: https://deb.freshdeb.com/postsrsd
Suites: resolute
Components: main
Signed-By: /etc/apt/keyrings/freshdeb-archive-keyring.gpg
EOF

3Install

sudo apt update && sudo apt install postsrsd
apt policy postsrsd   # expect 2.4.1-2+freshdeb~ubuntu26.04

Already on Ubuntu 26.04's PostSRSd? The same command upgrades it: the freshdeb version sorts higher. What's different from Debian's package.

Upgrading from PostSRSd 2.0.11

Configuration and data stay where Debian put them.

Going back to 2.0.11

Delete /etc/apt/sources.list.d/freshdeb-postsrsd.sources, run sudo apt update, then sudo apt install postsrsd=2.0.11-1: apt asks before it downgrades. PostSRSd 1.x reads /etc/default/postsrsd again, which the upgrade leaves in place, and Postfix needs its tcp: lines back.

Why a package

The upstream source builds with CMake, but then the service, the user, the chroot and the AppArmor profile are yours to set up. This is Debian's package, with all of that, at upstream's current release.

PostSRSd elsewhere

postsrsd: every release line, its contents and origin