54 lines
2.2 KiB
Bash
54 lines
2.2 KiB
Bash
# Stop if the PRIMARY_HOSTNAME is listed in the Spamhaus Domain Block List.
|
|
# The user might have chosen a name that was previously in use by a spammer
|
|
# and will not be able to reliably send mail. Do this after any automatic
|
|
# choices made above.
|
|
if host $PRIMARY_HOSTNAME.dbl.spamhaus.org > /dev/null; then
|
|
echo
|
|
echo "The hostname you chose '$PRIMARY_HOSTNAME' is listed in the"
|
|
echo "Spamhaus Domain Block List. See http://www.spamhaus.org/dbl/"
|
|
echo "and http://www.spamhaus.org/query/domain/$PRIMARY_HOSTNAME."
|
|
echo
|
|
echo "You will not be able to send mail using this domain name, so"
|
|
echo "setup cannot continue."
|
|
echo
|
|
exit
|
|
fi
|
|
|
|
# Stop if the IPv4 address is listed in the ZEN Spamhouse Block List.
|
|
# The user might have ended up on an IP address that was previously in use
|
|
# by a spammer, or the user may be deploying on a residential network. We
|
|
# will not be able to reliably send mail in these cases.
|
|
REVERSED_IPV4=$(echo $PUBLIC_IP | sed "s/\([0-9]*\).\([0-9]*\).\([0-9]*\).\([0-9]*\)/\4.\3.\2.\1/")
|
|
if host $REVERSED_IPV4.zen.spamhaus.org > /dev/null; then
|
|
echo
|
|
echo "The IP address $PUBLIC_IP is listed in the Spamhaus Block List."
|
|
echo "See http://www.spamhaus.org/query/ip/$PUBLIC_IP."
|
|
echo
|
|
echo "You will not be able to send mail using this machine, so setup"
|
|
echo "cannot continue."
|
|
echo
|
|
echo "Associate a different IP address with this machine if possible."
|
|
echo "Many residential network IP addresses are listed, so Mail-in-a-Box"
|
|
echo "typically cannot be used on a residential Internet connection."
|
|
echo
|
|
exit
|
|
fi
|
|
|
|
# Stop if we cannot make an outbound connection on port 25. Many residential
|
|
# networks block outbound port 25 to prevent their network from sending spam.
|
|
# See if we can reach one of Google's MTAs with a 5-second timeout.
|
|
if ! nc -z -w5 aspmx.l.google.com 25; then
|
|
echo
|
|
echo "Outbound mail (port 25) seems to be blocked by your network."
|
|
echo
|
|
echo "You will not be able to send mail using this machine, so setup"
|
|
echo "cannot continue."
|
|
echo
|
|
echo "Many residential networks block port 25 to prevent hijacked"
|
|
echo "machines from being able to send spam. I just tried to connect"
|
|
echo "to Google's mail server on port 25 but the connection did not"
|
|
echo "succeed."
|
|
echo
|
|
exit
|
|
fi
|