In /etc/exim4/exim4.conf.template
replace:
system_aliases: ... data = ${lookup{$local_part}lsearch{/etc/aliases}}
By:
system_aliases: ... data = ${lookup{$local_part}lsearch*@{/etc/aliases}}
Add the fallback alias in /etc/aliases
For example:
* : a_local_user
or
* : a_remote_user@internet.net
Run newaliases
to make Exim4 know new aliases.
Forcer le traitement de la queue:
# /usr/sbin/exim -qf
Ainsi que les messages “frozen”:
# /usr/sbin/exim -qff
Compter le nombre de messages dans la queue:
# /usr/sbin/exim -bpr | grep "<" | wc -l
exim4 -bP => dump la configuration $ sudo exim4 -bP| grep nonmail smtp_accept_max_nonmail = 100 smtp_accept_max_nonmail_hosts = *
exim4 -M email-id => Force delivery of one message exim4 -qf => Force another queue run exim4 -qff => Force another queue run and attempt to flush the frozen message exim4 -Mvl messageID => View the log for the message exim4 -Mvb messageID => View the body of the message exim4 -Mvh messageID => View the header of the message exim4 -Mrm messageID => Remove message without sending any error message exim4 -Mg messageID => Giveup and fail message to bounce the message to the Sender exim4 -bpr | grep “<” | wc -l =>Number of emails in the que exim4 -bpr | grep frozen | wc -l => How many Frozen mails on the queue # Deleteing Frozen Messages $ sudo exim4 -bpr | grep frozen | awk {'print $3'} | xargs sudo /usr/sbin/exim -Mrm
no immediate delivery: more than 10 messages received in one connection
$ sudo editor /etc/exim4/exim4.conf.template
change (or add) line: smtp_accept_queue_per_connection=30
update config: $ sudo update-exim4.conf
That's all.
View new config: $ sudo exim4 -bP | grep smtp_accept_
Smarthost + TLS :
Cet exemple pour domain.tld
et ses sous-domaines, avec le selecteur default
Générer les clés:
$ openssl genrsa -out dkim.key 2048 $ openssl rsa -in dkim.key -out dkim.pub -pubout -outform PEM
Publier la clé publique sur le DNS
default._domainkey.domain.tld. 60 DKIM "k=rsa;s=email;p=MIIBIjANBgkqhkiG9w0B...QAB;"
Configurer exim4 dans /etc/exim4/exim4.conf.localmacros
MAIN_TLS_ENABLE=1 REMOTE_SMTP_SMARTHOST_HOSTS_REQUIRE_TLS=* DKIM_DRIVER=smtp DKIM_DOMAIN=domain.tld #DKIM_DOMAIN=${lc:${domain:$h_from:}} DKIM_SELECTOR=default DKIM_CANON=relaxed DKIM_PRIVATE_KEY=/etc/exim4/dkim.key
Générer la config et informer le service:
$ sudo update-exim4.conf $ sudo systemctl reload exim4.service
Puis vérifier en envoyant un email à check-auth@verifier.port25.com ou https://mail-tester.com (3 tests par jour).
$ mail -s 'test' check-auth@verifier.port25.com