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Table of Contents

SECUTIX SecuTix sends either technical (transaction ...) emails or "marketing" emails via SAM.

In both cases, reliability of delivery is very important.

Technical measures

Set an SPF entry in your DNS

Introduction to SPF

Sender Policy Framework (SPF) is an email authentication method designed to detect forged sender addresses in emails.

...

Info
v=spf1 include:spf.secutix.com ~all

SPF - Procedure to follow

  • SecuTix provides a list of authorized servers used to send emails on behalf of the institution mosamuseum
  • The mosamuseum institution publishes a corresponding SPF record in its DNS
    • create a SPF record:

...

Setup DKIM

Introduction to DKIM

SecuTixSECUTIX, acting as software-as-a-service providers (SaaS), allows you to define DomainKeys Identified Mail (DKIM) for sent emails. This requires coordination with SecuTix SECUTIX to set up the corresponding DNS records.
The example below illustrates this DKIM configuration with the header of an email from a fictive institution "mosamuseum":

Expand


Info
iconfalse

Date: Wed, 26 Jun 2019 15:49:40 -0500 (CDT)
From: Mosa Museum <xxx@mosamuseum.com>
...
DKIM-Signature: d=mosamuseum.com; i=@mosamuseum.com; a=rsa-sha256; s=sel1-mosa._domainkey.dkim.secutix.com
    ...
    bh=WTjrH3YovAOLmv02UPKrOs1RP8f44D+rDd/nVHKRB9s=;
    b=dYPEA8XsfrF9fFZzkHsj59zo7XnJkR2uXJ7QEvg6oWLmZJpzNfZe7DbLpK5PKhEH
    SS7wPy4xfGai2MYvlk/DmSfNjoCo/Hgbnv1hpY034ELNKtWQu9m0xGoBsMLof3cDu8J
    JV70p/IYLswI/4chWS9J3y6tVCj9r9Zi1xCwKhsw=

    ...

Authentication-Results: ... dkim=pass (signature verified) header.i=@mosamuseum.com ...


Subject: Here is a message from SecuTix infrastructure, but with a DKIM signature authorized by mosamuseum.com

In this example, the DKIM signature included in the header of the email is:

Info
iconfalse

    bh=WTjrH3YovAOLmv02UPKrOs1RP8f44D+rDd/nVHKRB9s=;

    b=dYPEA8XsfrF9fFZzkHsj59zo7XnJkR2uXJ7QEvg6oWLmZJpzNfZe7DbLpK5PKhEH

    SS7wPy4xfGai2MYvlk/DmSfNjoCo/Hgbnv1hpY034ELNKtWQu9m0xGoBsMLof3cDu8J

    JV70p/IYLswI/4chWS9J3y6tVCj9r9Zi1xCwKhsw=




The recipient system can verify the authenticity by looking up the sender's public key published in the DNS. A valid signature also guarantees that some parts of the email (possibly including attachments) have not been modified since the signature was affixed.

...