diff options
Diffstat (limited to '_posts/2016-10-31-freebsd-mailserver-part-4-message-authentication.md')
| -rw-r--r-- | _posts/2016-10-31-freebsd-mailserver-part-4-message-authentication.md | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/_posts/2016-10-31-freebsd-mailserver-part-4-message-authentication.md b/_posts/2016-10-31-freebsd-mailserver-part-4-message-authentication.md index 38e4a15..3b7a78a 100644 --- a/_posts/2016-10-31-freebsd-mailserver-part-4-message-authentication.md +++ b/_posts/2016-10-31-freebsd-mailserver-part-4-message-authentication.md @@ -26,7 +26,7 @@ pkg install opendkim ### Configuration Write the following configuration into `/usr/local/etc/mail/opendkim.conf`. -{% highlight conf %} +{% highlight apache %} # logging Syslog yes @@ -109,7 +109,8 @@ straightforward and can be done using a simple `echo` as well. {% highlight sh %} echo '*@domain.tld domain.tld' >> /usr/local/etc/opendkim/signing.table -echo "domain.tld domain.tld:$(date +%Y%m%d):/usr/local/etc/opendkim/keys/domain.tld/$(date +%Y%m%d).private" >> /usr/local/etc/opendkim/key.table +echo "domain.tld domain.tld:$(date +%Y%m%d):/usr/local/etc/opendkim/keys/domain.tld/$(date +%Y%m%d).private" \ + >> /usr/local/etc/opendkim/key.table {% endhighlight %} ### Adding the DNS records @@ -126,9 +127,9 @@ domain. A simple example for an SPF record is the following. It allows mail to be sent in the domain's name from any IP listed in the MX records. -{% highlight plain %} +``` v=spf1 mx -all -{% endhighlight %} +``` ## DMARC DMARC is, like SPF, a DNS record. It tells how to deal with messages coming @@ -142,9 +143,9 @@ authentication. This means the emails will go into the receiving user's spam box. In addition, abuse reports will be sent to the address defined in the `rua`. -{% highlight plain %} +``` v=DMARC1; p=quarantine; rua=mailto:abuse@domain.tld -{% endhighlight %} +``` ## Conclusion These few simple measures will make receiving servers trust the authenticity of |