Is it possible to get a list of email boxes for a specific domain?

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TechNOIR2017-09-20 07:57:23

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TechNOIR, 2017-09-20 07:57:23

Good afternoon. Is it possible to get a list of email boxes for a specific domain?
That is, there is a site.com domain. You need to find out what mailboxes like *@site.com exist

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CityCat4, 2017-09-20
@CityCat4

Only if insider.
Previously, such things were recognized by blunt enumeration of [email protected], [email protected], etc. Now not receiving a letter (with a diagnostic like User unknown) does not mean the absence of a mailbox, but receiving a letter does not mean at all that the letter will actually be read by someone .