> >> Yeah, at this point, if I get anything from Outlook, Yahoo, Google, > >> Mailchimp, Mailgun, OVH, or Sendgrid and it’s not a explicitly a > >> whitelisted entry, I bounce it. > > > >I used a greylist where emails get a 4xx message with a link that > allows the email through ... > > Why would a mail system tell senders about a 4xx reply? That means to > try again, not to bounce it. > > I realize that old versions of sendmail sent those annoying "your > message has been delayed, retrying"
Sendmail as opposed to the "it is to difficult for me to configure sendmail so I use other" smtp servers? > reports but I hope we all realize those are a mistake, at least for any > mail system in this millenium. > Yes makes sense, don't read what is in a dsn. What idiot ever designed such architecture.
