I have some emails IDs and I want to verify that, are these IDs are valid or not but I dont want to send any test mails to them. I checked it with sendmail and there is an option under sendmail (under linux 6.2 ESMTP Sendmail 8.9.3/8.9.3)
sendmail -bv firstname.lastname@example.org
this should verify the email is valid or not. But this is not working, even for wrong email IDs it is saying deliverable. Is there any other option to validate emails IDs.
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