EmailOctopus
SPF
EmailOctopus is capable of sending SPF-aligned emails, meaning that they use your domain name in the Envelope From
(or Return-Path
) of email messages.
This makes it possible to achieve DMARC compliance via SPF.
You don’t need to create a TXT
SPF record on your domain, since EmailOctopus takes care of it for you.
In fact, EmailOctopus uses a subdomain like eom.example.com
in the Envelope From
, and SPF verifiers look for the SPF record on this domain.
Since the eom.example.com
subdomain is pointed to EmailOctopus with a CNAME
record during the verification process, the SPF record will be managed by them.
DKIM
EmailOctopus supports custom DKIM signatures domains. This makes it possible to achieve DMARC compliance via DKIM.
To set up EmailOctopus DKIM on your domain, create a CNAME
record as instructed during the sender verification process:
Type | Host | Value |
---|---|---|
CNAME | eo._domainkey.example.com | As provided by EmailOctopus. |
DMARC
EmailOctopus supports DMARC compliance via both SPF and DKIM, with strict alignment on DKIM but only relaxed alignment on SPF.
Set up DMARC to:
- Receive email delivery reports to identify and fix authentication issues and find out who’s sending from your domain.
- Choose the action to apply when both SPF and DKIM are not aligned with your sender domain, blocking abuse attempts.
Use a DMARC monitoring tool like DMARCwise to simplify compliance and detect issues before they affect your domain reputation.
Here’s an example of a DMARC record, to be created as a TXT
record on _dmarc.example.com
:
v=DMARC1; p=none; rua=mailto:;
You may later strengthen the policy and change the alignment mode, but remember that in EmailOctopus:
- The SPF domain is a subdomain of your sender domain, so you cannot use the strict SPF alignment mode.
- The DKIM signature domain would instead match your sender domain exactly, so you may use strict DKIM alignment.
v=DMARC1; p=reject; rua=mailto:; adkim=s;
(aspf=r;
for relaxed SPF is implied if left out.)
Last updated on October 5, 2024