Debian Bug report logs - #854475
postfix: systemd needs postfix@.service to have "After=network.target"

Package: postfix
Version: 3.1.4-4
Severity: important
Tags: patch

The file /lib/systemd/system/postfix@.service needs to have the line
"After=network.target" to make sure that all the network interfaces are raised
before it is started.  Otherwise the startup will abort if Postfix is
configured to bind to any interface other than all (or maybe localhost).

After a recent update postfix would not be running on system start, it would
report that it couldn't bind to one of the IP addresses in it's config file.
After changing the service file it works correctly.

-- System Information:
Debian Release: 9.0
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'testing'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.9.0-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages postfix depends on:
ii  adduser                3.115
ii  cpio                   2.11+dfsg-6
ii  debconf [debconf-2.0]  1.5.60
ii  dpkg                   1.18.18
ii  init-system-helpers    1.47
ii  libc6                  2.24-9
ii  libdb5.3               5.3.28-12+b1
ii  libicu57               57.1-5
ii  libsasl2-2             2.1.27~101-g0780600+dfsg-2
ii  libssl1.1              1.1.0c-2
ii  lsb-base               9.20161125
ii  netbase                5.4
ii  postfix-sqlite         3.1.4-4
ii  ssl-cert               1.0.38

Versions of packages postfix recommends:
ii  python3  3.5.3-1

Versions of packages postfix suggests:
ii  bsd-mailx [mail-reader]        8.1.2-0.20160123cvs-3
ii  dovecot-core [dovecot-common]  1:2.2.27-2
ii  libsasl2-modules               2.1.27~101-g0780600+dfsg-2
pn  postfix-cdb                    <none>
ii  postfix-doc                    3.1.4-4
pn  postfix-ldap                   <none>
pn  postfix-lmdb                   <none>
ii  postfix-mysql                  3.1.4-4
ii  postfix-pcre                   3.1.4-4
pn  postfix-pgsql                  <none>
pn  procmail                       <none>
pn  resolvconf                     <none>
pn  sasl2-bin                      <none>
pn  ufw                            <none>

-- Configuration Files:
/etc/network/if-down.d/postfix changed:
exit 0
if [ ! -d /usr/lib/postfix ]; then
	exit 0
fi
RUNNING=""
if [ -f /var/spool/postfix/pid/master.pid ]; then
	pid=$(sed 's/ //g' /var/spool/postfix/pid/master.pid)
	exe=$(ls -l /proc/$pid/exe 2>/dev/null | sed 's/.* //;s/.*\///')
	if [ "X$exe" = "Xmaster" ]; then
		RUNNING="y"
	fi
fi
if [ ! -x /sbin/resolvconf ]; then
	f=/etc/resolv.conf
	if ! cp $f $(postconf -h queue_directory)$f 2>/dev/null; then
		exit 0
	fi
	if [ -n "$RUNNING" ]; then
		service postfix reload >/dev/null 2>&1
	fi
fi
exit 0

/etc/network/if-up.d/postfix changed:
exit 0
if [ "$IFACE" = "lo" ]; then
	exit 0
fi
if [ ! -d /usr/lib/postfix ]; then
	exit 0
fi
RUNNING=""
if [ -f /var/spool/postfix/pid/master.pid ]; then
	pid=$(sed 's/ //g' /var/spool/postfix/pid/master.pid)
	exe=$(ls -l /proc/$pid/exe 2>/dev/null | sed 's/.* //;s/.*\///')
	if [ "X$exe" = "Xmaster" ]; then
		RUNNING="y"
	fi
fi
if [ ! -x /sbin/resolvconf ]; then
	f=/etc/resolv.conf
	if ! cp $f $(postconf -h queue_directory)$f 2>/dev/null; then
		exit 0
	fi
	if [ -n "$RUNNING" ]; then
		service postfix reload >/dev/null 2>&1
	fi
fi
if [ -n "$RUNNING" ]; then
	if [ -x /usr/sbin/sendmail ]; then
		/usr/sbin/sendmail -q >/dev/null 2>&1
	fi
fi

/etc/ppp/ip-down.d/postfix changed:
exit 0
if [ ! -d /usr/lib/postfix ]; then
	exit 0
fi
RUNNING=""
if [ -f /var/spool/postfix/pid/master.pid ]; then
	pid=$(sed 's/ //g' /var/spool/postfix/pid/master.pid)
	exe=$(ls -l /proc/$pid/exe 2>/dev/null | sed 's/.* //;s/.*\///')
	if [ "X$exe" = "Xmaster" ]; then
		RUNNING="y"
	fi
fi
if [ ! -x /sbin/resolvconf ]; then
	f=/etc/resolv.conf
	if ! cp $f $(postconf -hx queue_directory)$f 2>/dev/null; then
		exit 0
	fi
	if [ -n "$RUNNING" ]; then
		service postfix reload >/dev/null 2>&1
	fi
fi
exit 0

/etc/ppp/ip-up.d/postfix changed:
exit 0
if [ "$IFACE" = "lo" ]; then
	exit 0
fi
if [ ! -d /usr/lib/postfix ]; then
	exit 0
fi
RUNNING=""
if [ -f /var/spool/postfix/pid/master.pid ]; then
	pid=$(sed 's/ //g' /var/spool/postfix/pid/master.pid)
	exe=$(ls -l /proc/$pid/exe 2>/dev/null | sed 's/.* //;s/.*\///')
	if [ "X$exe" = "Xmaster" ]; then
		RUNNING="y"
	fi
fi
if [ ! -x /sbin/resolvconf ]; then
	f=/etc/resolv.conf
	if ! cp $f $(postconf -hx queue_directory)$f 2>/dev/null; then
		exit 0
	fi
	if [ -n "$RUNNING" ]; then
		service postfix reload >/dev/null 2>&1
	fi
fi
if [ -n "$RUNNING" ]; then
	if [ -x /usr/sbin/sendmail ]; then
		/usr/sbin/sendmail -q >/dev/null 2>&1
	fi
fi

/etc/rsyslog.d/postfix.conf changed:

-- debconf information excluded

-- debsums errors found:
debsums: changed file /lib/systemd/system/postfix@.service (from postfix package)

Debian Bug report logs - #854475 postfix: systemd needs postfix@.service to have "After=network.target"

Debian Bug report logs - #854475
postfix: systemd needs postfix@.service to have "After=network.target"