url with subdomains will appear BEFORE url (ex. @support.rarible.com, @account.brazzers.com) The end of the email address is where it is coming from. So if you see something like this: @rarible.gotcha.com or @ebaysecurity.dummy.com then the email is from gotcha.com and dummy.com which we know are not related to the site they are claiming. More @Wikipedia
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