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by upofadown 2662 days ago
>... including gmail ...

  #> swaks  --quit-after RCPT --TO kdskr3j2@gmail.com                
  === Trying gmail-smtp-in.l.google.com:25...
  === Connected to gmail-smtp-in.l.google.com.
  <-  220 mx.google.com ESMTP a199si3828494itd.133 - gsmtp
   -> EHLO example.com
  <-  250-mx.google.com at your service, [xx.xx.xx.xx]
  <-  250-SIZE 157286400
  <-  250-8BITMIME
  <-  250-STARTTLS
  <-  250-ENHANCEDSTATUSCODES
  <-  250-PIPELINING
  <-  250-CHUNKING
  <-  250 SMTPUTF8
   -> MAIL FROM:<bob@example.com>
  <-  250 2.1.0 OK a199si3828494itd.133 - gsmtp
   -> RCPT TO:<kdskr3j2@gmail.com>
  <** 550-5.1.1 The email account that you tried to reach does not exist. Please try
  <** 550-5.1.1 double-checking the recipient's email address for typos or
  <** 550-5.1.1 unnecessary spaces. Learn more at
  <** 550 5.1.1  https://support.google.com/mail/?p=NoSuchUser a199si3828494itd.133 - gsmtp
   -> QUIT
  <-  221 2.0.0 closing connection a199si3828494itd.133 - gsmtp
  === Connection closed with remote host.