Slackware
slackpkg install dovecot libunwind libsodium mariadb sqlite grep dove /etc/passwd grep dove /etc/group
gives
dovecot:x:94:94:User for Dovecot processes:/dev/null:/bin/false dovenull:x:95:95:User for Dovecot login processing:/dev/null:/bin/false dovecot:x:94: dovenull:x:95:
grab the latest release
ver=2.3.14 wget https://dovecot.org/releases/2.3/dovecot-$ver.tar.gz wget https://dovecot.org/releases/2.3/dovecot-$ver.tar.gz.sig gpg --verify dovecot-$ver.tar.gz.sig gpg --recv-key ED409DA1 gpg --verify dovecot-$ver.tar.gz.sig
you should have a good signature with this fingerprint
Primary key fingerprint: 2BE7 4AAB 3EE7 54DF B9C8 0D33 18A3 48AE ED40 9DA1
eventually add Kerberos support on your distro e.g.
slackpkg install krb5 pam-krb5
extract and build
tar xzf dovecot-$ver.tar.gz
cd dovecot-$ver/
./configure --help
./configure --sysconfdir=/etc --localstatedir=/var \
--without-nss --without-sql --without-pgsql --without-mysql --without-sqlite --without-cassandra \
--with-gssapi=yes --with-ntlm
grep ^SSL Makefile # eventually points to LibreSSL in /usr/local/
echo $MAKEFLAGS
screen -S build
time nice make > ../dovecot.log && echo BUILT
# 25m25.453s
nice make install
echo /usr/local/lib >> /etc/ld.so.conf
ldconfig
prepare the system – create groups and users
grep dove /etc/passwd # no exist grep dove /etc/group # no exist
slackware
groupadd -g 94 dovecot useradd --system -M -d /dev/null -u 94 -g dovecot -s /sbin/nologin dovecot groupadd -g 95 dovenull useradd --system -M -d /dev/null -u 95 -g dovenull -s /sbin/nologin dovenull
netbsd
groupadd -g 42 dovecot useradd -d /dev/null -u 42 -g dovecot -s /sbin/nologin dovecot #-c "Dovecot unprivileged user" groupadd -g 43 dovenull useradd -d /dev/null -u 43 -g dovenull -s /sbin/nologin dovenull #-c "Dovecot login user"
so you’re now ready to proceed
Ubuntu/Debian: Installing Nginx/Postfix/Dovecot using LibreSSL https://zurgl.com/ubuntu-debian-installing-nginx-postfix-dovecot-using-libressl/