File debian.postinst of Package update-sa
#!/bin/sh -e getent passwd vscan >/dev/null || useradd -r -c "virus scanner daemon" -d /var/spool/amavis -s /bin/false vscan exit 0
#!/bin/sh -e getent passwd vscan >/dev/null || useradd -r -c "virus scanner daemon" -d /var/spool/amavis -s /bin/false vscan exit 0