The mail server could not deliver mail to email@example.com. The account or domain may not exist, they may be blacklisted, or missing the proper dns entries.
Message not sent. Requested action not taken: mailbox unavailable Server replied: 550 Verification failed for <firstname.lastname@example.org> The mail server could
Here is a basic find command in a linux terminal through ssh: find / -name 'filename.txt' So that would search for an exact filename of filename.txt in any