Unique subdomain for sending emails - HOW? -


this not easy question because technique have never seen before. received email website subscribed , email sender this:

name@company-91e363c0cfc9.mail.intercom.io

i have saas software users can send email marketing. problem sender email no-reply@domain.com every 1 of them. thinking "what if" of customers sends junk , domain gets blacklisted?

looking @ technique intercom using thought way solve blacklist issue.

let assume customer sends spam, hole domain blacklisted (mail.intercom.io) or @company-91e363c0cfc9.mail.intercom.io ?

i have following questions:

  • what name of technique/configuration.
  • is technique solve getting root domain blacklisted ?
  • how can configure on server?

thanks.

they create sub-domain each of clients in dns, can see mx record lookup of domain provided. when email sent out, have outgoing ip address on email, didn't provide. outgoing ip going blacklisted, doesn't matter if 50 sub-domains different, outgoing ip (sending ip) going blacklisted. don't think you're going able working around abusive customer, if ip's same.

i spoke hosting companies have similar issues , before every allow client send mail, need clean report mail tester. but, clean configuration , authentication, doesn't prevent spam content being sent. when happens ip owner has address it, barring customer sending spam, if don't correct behavior.

you can monitor ip's blacklists , should, you're going ton of abuse reports coming in various providers, if it's problem.


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