IT problems and solutions from our everyday IT life, worth writing and remembering. Knowledge should be shared, NOT KEPT!
host yy.com [XXX.XXX.XXX.XXX] said:
550-Verification failed for <firstname.lastname@example.org> 550-No such person at this
address" 550 Sender verify failed (in reply to RCPT TO command)
7-9 Anageniseos St, 1st Floor, Building A,
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