[Unit]
Description=Stalwart Mail & Collaboration Server
ConditionPathExists=/etc/stalwart.toml
StartLimitBurst=3
StartLimitIntervalSec=60
Conflicts=postfix.service sendmail.service exim4.service
After=network-online.target

[Service]
Type=simple
AmbientCapabilities=CAP_NET_BIND_SERVICE
Restart=on-failure
ExecStart=/usr/sbin/stalwart --config=/etc/stalwart.toml
ExecStartPost=/usr/bin/sh -c "umask '022'; /usr/bin/pgrep --newest 'stalwart' > '/run/stalwart/stalwart.pid'"
ExecStop=/usr/bin/rm --force '/run/stalwart/stalwart.pid'
LimitNOFILE=65536
KillMode=process
KillSignal=SIGINT
User=stalwart
Group=stalwart
PrivateDevices=true
PrivateTmp=true
ProtectSystem=strict
ReadWriteDirectories=/etc/stalwart.toml
ReadWriteDirectories=/var/lib/stalwart
ReadWriteDirectories=/var/log/stalwart
RuntimeDirectory=stalwart
RuntimeDirectoryMode=755
RuntimeDirectoryPreserve=yes
WorkingDirectory=/var/lib/stalwart

[Install]
WantedBy=multi-user.target