# See the License for the specific language governing permissions and
# limitations under the License.
+set -eE -o pipefail
+trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
+
+####### begin perstent password instructions ######
+# # exim passwords:
+# # for hosts which have all private files I just use the same user
+# # for other hosts, each one get\'s their own password.
+# # for generating secure pass, and storing for server too:
+# # user=USUALLY_SAME_AS_HOSTNAME
+# user=li
+# f=$(mktemp)
+# apg -m 50 -x 70 -n 1 -a 1 -M CLN >$f
+# s sed -i "/^$user:/d" /p/c/filesystem/etc/exim4/passwd
+# echo "$user:$(mkpasswd -m sha-512 -s <$f)" >>/p/c/filesystem/etc/exim4/passwd
+# echo "mail.iankelling.org:$user:$(<$f)" >> /p/c/machine_specific/$user/filesystem/etc/mailpass
+# # then run this script, or part of it which uses /etc/mailpass
+
+# # dovecot password, i just need 1 as I\'m the only user
+# mkdir /p/c/filesystem/etc/dovecot
+# echo "ian:$(doveadm pw -s ssha256)::::::" >/p/c/filesystem/etc/dovecot/users
+# conflink
+
+
+
+# # for ad-hoc testing of some random new host sending mail:
+# user=li # client host username & hostname
+# f=$(mktemp)
+# apg -m 50 -x 70 -n 1 -a 1 -M CLN >$f
+# s sed -i "/^$user:/d" /etc/exim4/passwd
+# echo "$user:$(mkpasswd -m sha-512 -s <$f)" | s tee -a /etc/exim4/passwd
+# echo "mail.iankelling.org:$user:$(<$f)" | ssh root@$user dd of=/etc/exim4/passwd.client
+####### end perstent password instructions ######
+
+
+####### begin persistent dkim/dns instructions #########
+# # Remove 1 level of comments in this section, set the domain var
+# # for the domain you are setting up, then run this and copy dns settings
+# # into dns.
+# domain=iankelling.org
+# c /p/c/filesystem/etc/exim4
+# # this has several bugs addressed in comments, but it was helpful
+# # https://debian-administration.org/article/718/DKIM-signing_outgoing_mail_with_exim4
+
+# openssl genrsa -out $domain-private.pem 2048 -outform PEM
+# openssl rsa -in $domain-private.pem -out $domain.pem -pubout -outform PEM
+# # selector is needed for having multiple keys for one domain.
+# # I dun do that, so just use a static one: li
+# echo "txt record name: li._domainkey.$domain"
+# # Debadmin page does not have v=, fastmail does, and this
+# # says it\'s recommended in 3.6.1, default is DKIM1 anyways.
+# # https://www.ietf.org/rfc/rfc6376.txt
+# # Join and print all but first and last line.
+# # last line: swap hold & pattern, remove newlines, print.
+# # lines 2+: append to hold space
+# echo "txt record contents:"
+# echo "v=DKIM1; k=rsa; p=$(sed -n '${x;s/\n//gp};2,$H' $domain.pem)"
+# chmod 644 $domain.pem
+# chmod 640 $domain-private.pem
+# # in conflink, we chown these to group debian
+# conflink
+# # selector was also put into /etc/exim4/conf.d/main/000_localmacros,
+# # via the mail-setup scripts
+
+# # 2017-02 dmarc policies:
+# # yahoo: p=reject, hotmail: p=none, gmail: p=none, fastmail none for legacy reasons
+# # gmail will be changing to p=reject, which is expected to cause problems
+# # with a few old mailing lists, copying theirs for now.
+# echo "dmarc dns, name: _dmarc value: v=DMARC1; p=none; rua=mailto:mailauth-reports@$domain"
+
+# # 2017-02 spf policies:
+# # google ~all, hotmail -all, yahoo: ?all, fastmail ?all
+# # i include fastmail\'s settings, per their instructions,
+# # and follow their policy. In mail in a box, or similar instructions,
+# # I\'ve seen recommended to not use a restrictive policy.
+# echo "spf dns: name is empty, value: v=spf1 a include:spf.messagingengine.com ?all"
+
+# # to check if dns has updated, you do
+# host -a mesmtp._domainkey.$domain
+
+# # mx records,
+# # setting it to iankelling.org would work the same, but this
+# # is more flexible, I could change where mail.iankelling.org pointed.
+# cat <<'EOF'
+# mx records, 2 records each, for * and empty domain
+# pri 10 mail.iankelling.org
+# pri 20 in1-smtp.messagingengine.com
+# pri 30 in2-smtp.messagingengine.com
+# EOF
+####### end persistent dkim instructions #########
+
# misc exim notes:
# useful exim docs:
#exim4 -bt ian@localhost
-set -eE -o pipefail
-trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
-
type=$1
postfix() { [[ $type == postfix ]]; }
exim() { [[ $type == exim4 ]]; }
local_mx=mail.iankelling.org
-if [[ $HOSTNAME == $MAIL_HOST ]]; then
- host=mail.messagingengine.com
- relayhost="[$host]:587" # postfix
- smarthost="$host::587" # exim
-else
- host=$local_mx
- relayhost="[$host]:25" # postfix
- smarthost="$host::25" # exim
-fi
-forward=ian@$local_mx
+host=$local_mx
+relayhost="[$host]:25" # postfix
+smarthost="$host::25" # exim
-# background: This also works instead of ~/.forward
-# s sed -i --follow-symlinks '/^root/d' /etc/aliases ||:
-#echo "root: $HOSTNAME@$SOME_DOMAIN" | s tee -a /etc/aliases
-# this can't be a symlink and has permission restrictions
-# it might work in /etc/aliases, but this seems more proper.
-e $forward > ~/.forward
-e $forward | s tee /root/.forward
-# exim log complains about 664 permissions.
-s chmod 644 ~/.forward /root/.forward
+# this was for when I used the exim config type
+# "mail sent by smarthost; received via SMTP or fetchmail"
+# if [[ $HOSTNAME == $MAIL_HOST ]]; then
+# host=mail.messagingengine.com
+# relayhost="[$host]:587" # postfix
+# smarthost="$host::587" # exim
+# fi
+forward=ian@$local_mx
+
+
+if [[ $HOSTNAME == $MAIL_HOST ]]; then
+ # if we are MAIL_HOST, exim config sets up an /etc/alias from
+ # root to the postmaster, which i config to ian, as long as there
+ # exists an entry for root, or there was no preexisting aliases file.
+ # based on the postinst file.
+ s rm -f /etc/aliases
+else
+ # linode image has a root alias, I think it might override our .forward
+ sudo sed -i '/^root:/d' /etc/aliases
+ s newaliases
+
+ # background: This also works instead of ~/.forward
+ # s sed -i --follow-symlinks '/^root/d' /etc/aliases ||:
+ #echo "root: $HOSTNAME@$SOME_DOMAIN" | s tee -a /etc/aliases
+ # this can\'t be a symlink and has permission restrictions
+ # it might work in /etc/aliases, but this seems more proper.
+ e $forward > ~/.forward
+ e $forward | s tee /root/.forward
+ # 644 is required. shouldn\'t need changing, but set it just in case.
+ s chmod 644 ~/.forward /root/.forward
+fi
# offlineimap uses this too, it is much easier to use one location than to
-# condition it's config and postfix's config
+# condition it\'s config and postfix\'s config
case $distro in
fedora) s lnf -T ca-certificates.crt /etc/ssl/ca-bundle.trust.crt ;;
*) :
s systemctl enable postfix
s systemctl start postfix
fi
- # i'm assuming mail just won't work on systems without the sasl_passwd.
+ # i\'m assuming mail just won\'t work on systems without the sasl_passwd.
postconfin <<'EOF'
smtp_sasl_auth_enable = yes
smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
else # exim. has debian specific stuff for now
+
# wording of question from dpkg-reconfigure exim4-config
# 1. internet site; mail is sent and received directly using SMTP
# 2. mail sent by smarthost; received via SMTP or fetchmail
# 4. local delivery only; not on a network
# 5. no configuration at this time
#
- # only the one receiving host needs option 2, the rest can do option 1, but
- # that host might change, so we pick option 2 and later
- # don't set it up to receive anything. Also, only receiving host needs
- # dc_other_hostnames and beyond, but no harm.
+ # Note, I have used option 2 in the past for receiving mail
+ # from lan hosts, sending external mail via another smtp server.
+ #
+ # Note, other than configtype, we could set all the options in
+ # both types of configs without harm, they would either be
+ # ignored or be disabled by other settings, but the default
+ # local_interfaces definitely makes things more secure.
- # note, another related setting is /etc/mailname, which
- # is set to be $HOSTNAME.lan on stretch. this may need to be
- # setup on other distros.
+ # most of these settings get translated into settings
+ # in /etc/exim4/update-exim4.conf.conf
+ # mailname setting sets /etc/mailname
- #
s debconf-set-selections <<EOF
-exim4-config exim4/dc_eximconfig_configtype select mail sent by smarthost; received via SMTP or fetchmail
-exim4-config exim4/dc_smarthost string $smarthost
exim4-config exim4/use_split_config boolean true
-exim4-config exim4/dc_other_hostnames string mail.iankelling.org
+EOF
+
+ source /a/bin/bash_unpublished/source-semi-priv
+ exim_main_dir=/etc/exim4/conf.d/main
+ s mkdir -p exim_main_dir
+ if [[ $HOSTNAME == $MAIL_HOST ]]; then
+ # afaik, these will get ignored, routing to my own machine, but rm
+ # them to make me feel better.
+ s rm -f ~/.forward /root/.forward
+
+ s debconf-set-selections <<EOF
+# Mail Server configuration
+# -------------------------
+
+# Please select the mail server configuration type that best meets your needs.
+
+# Systems with dynamic IP addresses, including dialup systems, should generally be
+# configured to send outgoing mail to another machine, called a 'smarthost' for
+# delivery because many receiving systems on the Internet block incoming mail from
+# dynamic IP addresses as spam protection.
+
+# A system with a dynamic IP address can receive its own mail, or local delivery can be
+# disabled entirely (except mail for root and postmaster).
+
+# 1. internet site; mail is sent and received directly using SMTP
+# 2. mail sent by smarthost; received via SMTP or fetchmail
+# 3. mail sent by smarthost; no local mail
+# 4. local delivery only; not on a network
+# 5. no configuration at this time
+
+# General type of mail configuration: 1
+exim4-config exim4/dc_eximconfig_configtype select internet site; mail is sent and received directly using SMTP
+
+
+
+# The 'mail name' is the domain name used to 'qualify' mail addresses without a domain
+# name.
+
+# This name will also be used by other programs. It should be the single, fully
+# qualified domain name (FQDN).
+
+# Thus, if a mail address on the local host is foo@example.org, the correct value for
+# this option would be example.org.
+
+# This name won\'t appear on From: lines of outgoing messages if rewriting is enabled.
+
+# System mail name:
+exim4-config exim4/mailname string li.iankelling.org
+
+
+
+
+# Please enter a semicolon-separated list of recipient domains for which this machine
+# should consider itself the final destination. These domains are commonly called
+# 'local domains'. The local hostname (treetowl.lan) and 'localhost' are always added
+# to the list given here.
+
+# By default all local domains will be treated identically. If both a.example and
+# b.example are local domains, acc@a.example and acc@b.example will be delivered to the
+# same final destination. If different domain names should be treated differently, it
+# is necessary to edit the config files afterwards.
+
+# Other destinations for which mail is accepted:
+# iank.bid is for testing
+# mail.iankelling.org is for machines i own
+exim4-config exim4/dc_other_hostnames string *.iankelling.org;iankelling.org;*iank.bid;iank.bid;*zroe.org;zroe.org
+
+
+
+
+# Please enter a semicolon-separated list of IP addresses. The Exim SMTP listener
+# daemon will listen on all IP addresses listed here.
+
+# An empty value will cause Exim to listen for connections on all available network
+# interfaces.
+
+# If this system only receives mail directly from local services (and not from other
+# hosts), it is suggested to prohibit external connections to the local Exim daemon.
+# Such services include e-mail programs (MUAs) which talk to localhost only as well as
+# fetchmail. External connections are impossible when 127.0.0.1 is entered here, as
+# this will disable listening on public network interfaces.
+
+# IP-addresses to listen on for incoming SMTP connections:
+exim4-config exim4/dc_local_interfaces string
+
+
+
+
+# Mail for the 'postmaster', 'root', and other system accounts needs to be redirected
+# to the user account of the actual system administrator.
+
+# If this value is left empty, such mail will be saved in /var/mail/mail, which is not
+# recommended.
+
+# Note that postmaster\'s mail should be read on the system to which it is directed,
+# rather than being forwarded elsewhere, so (at least one of) the users listed here
+# should not redirect their mail off this machine. A 'real-' prefix can be used to
+# force local delivery.
+
+# Multiple user names need to be separated by spaces.
+
+# Root and postmaster mail recipient:
exim4-config exim4/dc_postmaster string ian
+
+
+
+# Exim is able to store locally delivered email in different formats. The most commonly
+# used ones are mbox and Maildir. mbox uses a single file for the complete mail folder
+# stored in /var/mail/. With Maildir format every single message is stored in a
+# separate file in ~/Maildir/.
+
+# Please note that most mail tools in Debian expect the local delivery method to be
+# mbox in their default.
+
+# 1. mbox format in /var/mail/ 2. Maildir format in home directory
+
+# Delivery method for local mail: 2
exim4-config exim4/dc_localdelivery select Maildir format in home directory
EOF
- # debconf settings will not work if packages are already installed,
- # such as on vps images.
- pu exim4-daemon-light exim4-daemon-heavy exim4-config exim4-base exim4
+ # MAIN_HARDCODE_PRIMARY_HOSTNAME might mess up the
+ # smarthost config type, not sure. all other settings
+ # would be unused in that config type.
+ s dd of=$exim_main_dir/000_localmacros 2>/dev/null <<'EOF'
+MAIN_TLS_ENABLE = true
+
+DKIM_CANON = relaxed
+DKIM_SELECTOR = li
+
+# from comments in
+# https://debian-administration.org/article/718/DKIM-signing_outgoing_mail_with_exim4
+
+# The file is based on the outgoing domain-name in the from-header.
+DKIM_DOMAIN = ${lc:${domain:$h_from:}}
+# sign if key exists
+DKIM_PRIVATE_KEY= ${if exists{/etc/exim4/${dkim_domain}-private.pem} {/etc/exim4/${dkim_domain}-private.pem}}
+
+
+# failing message on mail-tester.com:
+# We check if there is a server (A Record) behind your hostname treetowl.
+# You may want to publish a DNS record (A type) for the hostname treetowl or use a different hostname in your mail software
+# https://serverfault.com/questions/46545/how-do-i-change-exim4s-primary-hostname-on-a-debian-box
+# and this one seemed appropriate from grepping config
+MAIN_HARDCODE_PRIMARY_HOSTNAME = li.iankelling.org
+
+# normally empty, I set this so I can set the envelope address
+# when doing mail redelivery to invoke filters
+MAIN_TRUSTED_GROUPS = ian
+
+LOCAL_DELIVERY = dovecot_lmtp
+
+CHECK_RCPT_LOCAL_ACL_FILE = /etc/exim4/rcpt_local_acl
+EOF
+
+
+ s dd of=/etc/systemd/system/offlineimapsync.timer <<'EOF'
+[Unit]
+Description=Run offlineimap-sync once every 5 mins
+
+[Timer]
+OnCalendar=*:0/5
+
+[Install]
+WantedBy=timers.target
+EOF
+
+ s dd of=/etc/systemd/system/offlineimapsync.service <<'EOF'
+[Unit]
+Description=Offlineimap sync
+After=multi-user.target
+
+[Service]
+User=ian
+Type=oneshot
+ExecStart=/a/bin/log-quiet/sysd-mail-once offlineimap-sync /a/bin/distro-setup/offlineimap-sync
+EOF
+ s systemctl daemon-reload
+ s systemctl enable offlineimapsync.timer
+ s systemctl start offlineimapsync.timer
+
+ else # $HOSTNAME != $MAIL_HOST
+ s systemctl disable offlineimapsync.timer &>/dev/null ||:
+ s systemctl stop offlineimapsync.timer &>/dev/null ||:
+ #
+ #
+ # would only exist because I wrote it i the previous condition,
+ # it\'s not part of exim
+ s rm -f $exim_main_dir/000_localmacros
+ s debconf-set-selections <<EOF
+exim4-config exim4/dc_eximconfig_configtype select mail sent by smarthost; no local mail
+exim4-config exim4/dc_smarthost string $smarthost
+EOF
+ fi
+
+ # if we already have it installed, need to reconfigure, without being prompted
+ if dpkg -s exim4-config &>/dev/null; then
+ # gotta remove this, otherwise the set-selections are completely
+ # ignored. It woulda been nice if this was documented somewhere!
+ s rm -f /etc/exim4/update-exim4.conf.conf
+ s dpkg-reconfigure -u -fnoninteractive exim4-config
+ fi
# light version does not have sasl auth support.
- pi exim4-daemon-heavy
+ pi exim4-daemon-heavy spamassassin
+
+ ##### begin spamassassin config
+ ser enable spamassassin
+ # per readme.debian
+ s sed -i '/^\s*CRON\s*=/d' /etc/default/spamassassin
+ s tee -a /etc/default/spamassassin <<<CRON=1
+ # just noticed this in the config file, seems like a good idea.
+ s sed -i '/^\s*NICE\s*=/d' /etc/default/spamassassin
+ s tee -a /etc/default/spamassassin <<<'NICE="--nicelevel 15"'
+ ser reload spamassassin
+
+ s dd of=/etc/systemd/system/spamddnsfix.service <<'EOF'
+[Unit]
+Description=spamd dns bug fix cronjob
+
+[Service]
+Type=oneshot
+ExecStart=/a/bin/distro-setup/spamd-dns-fix
+EOF
+ s dd of=/etc/systemd/system/spamddnsfix.timer <<'EOF'
+[Unit]
+Description=run spamd bug fix script every 10 minutes
+[Timer]
+OnActiveSec=60
+# the script looks back 9 minutes into the journal,
+# it takes a second to run,
+# so lets run every 9 minutes and 10 seconds.
+OnUnitActiveSec=550
+
+[Install]
+WantedBy=timers.target
+EOF
+ ser daemon-reload
+ sgo spamddnsfix.timer
+ #
+ ##### end spamassassin config
+
+ gitslink # needed to install the execstart files below
s dd of=/etc/systemd/system/mailcert.service <<'EOF'
[Unit]
Description=Mail cert rsync
[Service]
Type=oneshot
-ExecStart=/a/bin/log-quiet/sysd-mail-once mailcert /a/bin/distro-setup/mail-cert-cron
+ExecStart=/usr/local/bin/sysd-mail-once mailcert /usr/local/bin/mail-cert-cron
EOF
s dd of=/etc/systemd/system/mailcert.timer <<'EOF'
[Install]
WantedBy=timers.target
EOF
+ ser daemon-reload
ser start mailcert
sgo mailcert.timer
+
+ # based on a little google and package search, just the dovecot
+ # packages we need instead of dovecot-common.
+ #
+ # dovecot-lmtpd is for exim to deliver to dovecot instead of maildir
+ # directly. The reason to do this is to use dovecot\'s sieve, which
+ # has extensions that allow it to be almost equivalent to exim\'s
+ # filter capabilities, some ways probably better, some worse, and
+ # sieve has the benefit of being supported in postfix and
+ # proprietary/weird environments, so there is more examples on the
+ # internet. I was torn about whether to do this or not, meh.
+ pi dovecot-core dovecot-imapd dovecot-sieve dovecot-lmtpd
+
+ # if we changed 90-sieve.conf and removed the active part of the
+ # sieve option, we wouldn\'t need this, but I\'d rather not modify a
+ # default config if not needed. This won\'t work as a symlink in /a/c
+ # unfortunately.
+ lnf -T sieve/main.sieve ~/.dovecot.sieve
+
+ # we have a few config files which installing exim/dovecot overwrites,
+ # and might as well have this before reading /etc/mailpass,
+ # which this sets up too.
+ conflink
+
+ # begin setup passwd.client
f=/etc/exim4/passwd.client
s rm -f $f
s touch $f
s chmod 640 $f
s chown root:Debian-exim $f
- # generating secure pass, and storing for server too:
- # user=USUALLY_SAME_AS_HOSTNAME
- # f=$(mktemp)
- # apg -m 50 -x 70 -n 1 -a 1 -M CLN >$f
- # echo "$user:$(mkpasswd -m sha-512 -s <$f)" >>/p/c/filesystem/etc/exim4/passwd
- # echo "mail.iankelling.org:$user:$(<$f)" >> /p/c/machine_specific/$user/filesystem/etc/mailpass
- #
- # for ad-hoc testing of some random new host:
- # host=testhost # client host username & hostname
- # f=$(mktemp)
- # apg -m 50 -x 70 -n 1 -a 1 -M CLN >$f
- # s sed "/^host:/d" /etc/exim4/passwd
- # echo "$host:$(mkpasswd -m sha-512 -s <$f)" | s tee -a /etc/exim4/passwd
- # echo "mail.iankelling.org:$host:$(<$f)" | ssh root@$host dd of=/etc/exim4/passwd.client
+ # note: this will go away
s cat /etc/mailpass| while read -r domain port pass; do
# reference: exim4_passwd_client(5)
- printf "%s:%s" "$domain" "$pass" | s tee -a $f >/dev/null
+ printf "%s:%s\n" "$domain" "$pass" | s tee -a $f >/dev/null
done
+ # end setup passwd.client
# https://blog.dhampir.no/content/make-exim4-on-debian-respect-forward-and-etcaliases-when-using-a-smarthost
# i only need .forwards, so just doing that one.
sed -r s/^\\S+:/$b:/ 600_exim4-config_$a | s dd of=$tmp 2>/dev/null
if ! diff -q $tmp $of &>/dev/null; then
s dd if=$tmp of=$of >/dev/null
- ser restart exim4
fi
-fi
+ ser restart exim4
+
+fi
+
-# linode image has a root alias. completely useless, remove it.
-sudo sed -i '/^root:/d' /etc/aliases
-s newaliases
# based on http://www.postfix.org/qmgr.8.html and my notes in gnus
iankelling.org / git / distro-setup / blobdiff