The CSO of my company doesn't want us to use Marketing Cloud to employees unless the emails are sent through a relay ("...it needs to be authenticated and secured (and must have protections to prevent and protect against misuse and spoofing...")

Is this possible in Marketing Cloud?

  • 1
    I know at one point SFMC had an early adoption option for an SMTP relay, but judging from the fact that I see nothing on it at all anymore, I am not sure it is still available. Would be worth asking your account rep for sure though. Oct 7, 2019 at 21:10
  • 1
    @Gortonington There was - but it isn't offered any more
    – SeanGorman
    Oct 8, 2019 at 13:08
  • Thanks for the affirmation @SeanGorman! I thought I was going crazy since I couldn't find ANY information on it anymore. Oct 8, 2019 at 13:13

2 Answers 2


SFMC does not offer SMTP relay.

However, I also don't see a need for this to achieve what your CSO is looking for. Emails sent from SFMC are both authenticated and secured. Measures for ensuring this are a.o.:

  • Your sender domains being TLS protected by default
  • DKIM and SPF are in place to authenticate your domain and sender IP
  • You can choose set up a custom DMARC record, enabling you to protect your customers and users of your website against false emails sent from your domain.
  • Lukas, at one point they did have an early adopter beta type program for it, right? Or am I going crazy? Oct 8, 2019 at 12:55
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    @Gortonington - The only feature I remember (which is no longer offered) was allowing customers to relay transactional triggered sends via SMTP through the Salesforce Marketing Cloud. Hence the emails (transactional only - i.e. password resets, etc) originating and sent by external sources, could utilise the Salesforce Marketing Cloud infrastructure and deliverability framework. So indeed the other way around - not sending through a 3rd party SMTP relay. Oct 8, 2019 at 13:05
  • @LukasLunow Thanks for this. Would a DMARC record also help with employees?
    – SeanGorman
    Oct 8, 2019 at 13:09
  • @SeanGorman - can you elaborate on the meaning of the word "help" in this context? :-) Oct 8, 2019 at 13:11
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    DMARC is a type of authentication to show ISPs that you are who you say you are: (sendgrid.com/blog/what-is-dmarc). It will help with deliverability and help prevent spoofing, etc. Oct 8, 2019 at 13:15

SFMC Used to have a native SMTP relay feature it was really simple to get up and running. It sat in the Classic version of Email Studio. I believe this feature was discontinued when Classic was turned off.

The updated version of this that sits in Content Builder > Interactions > Triggered Sends but it is not as obvious how you set it up as it says it can be linked to an API but still relies on an associated data extension.

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