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Finding specific domain in my instance

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matthardy
Level 1

Finding specific domain in my instance

We recently had to change our domain for our current instance due to some changes in policies on what we can use to send out third-party software. And I was wondering if there is a way to get an alert or a report on everytime that old domain is used for an email so that we can find it and change it.

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SanfordWhiteman
Level 10 - Community Moderator

Re: Finding specific domain in my instance

  1. Deliberately break the DKIM TXT record for that domain (the m1 DKIM selector).
  2. Make sure that domain has a DMARC entry that requires a DKIM signature.
  3. Look at the DKIM reports that come in from that domain, which will note the failed attempts.

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SanfordWhiteman
Level 10 - Community Moderator

Re: Finding specific domain in my instance

  1. Deliberately break the DKIM TXT record for that domain (the m1 DKIM selector).
  2. Make sure that domain has a DMARC entry that requires a DKIM signature.
  3. Look at the DKIM reports that come in from that domain, which will note the failed attempts.