Git/email-toolbox-wiki
1
0
Fork 0
mirror of https://github.com/internetstandards/toolbox-wiki.git synced 2024-11-21 18:41:36 +01:00
Code Issues Packages Projects Releases Wiki Activity

Updated SPF how to (markdown)

Browse Source
This commit is contained in:
Dennis Baaten 2019-05-20 13:34:07 +02:00
parent eea3bdb5f1
commit 336ec557c3
1 changed files with 6 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
SPF-how-to.md
View File

@ -11,7 +11,12 @@ Our current e-mail infrastructure was originally designed for any mail sending h
to-do to-do
# DNS records (outbound e-mail traffic) # DNS records (outbound e-mail traffic)
SPF for outbound e-mail traffic is limited to setting an SPF record in DNS. This enables other parties to use SPF for validating the authenticity of e-mail servers sending e-mail on behalf of your domain name. SPF for outbound e-mail traffic is limited to publishing an SPF policy as a TXT-record in a domain name's DNS zone. This enables other parties to use SPF for validating the authenticity of e-mail servers sending e-mail on behalf of your domain name.
The example below shows an SPF record with a **hard fail**.
> v=spf1 mx ip4:192.168.1.1/32 ip6:fd12:3456:789a:1::/64 a:mail.example.com a:mail2.example.com -all"
Although a soft fail (~all) is recommended in order to prevent false positives.
# Inbound e-mail traffic # Inbound e-mail traffic
@ -27,5 +32,4 @@ SPF for outbound e-mail traffic is limited to setting an SPF record in DNS. This
* DNSSEC is used * DNSSEC is used
* Mail server is operational * Mail server is operational
## Outbound e-mail traffic