5 ms·

So did I, it picked up a Google IP address. Anyone know how to close this? I have images turned off.

• icebraining 15y ago
  It seems to be the MTA (probably the spam filter), since it happens to me even without any client open, so there's probably no way to close it by your end.
  • eli 15y ago
    If it happens without any client open, then it isn't really a problem is it?
    • icebraining 15y ago
      Well, it doesn't happen if the address doesn't exist (I tested it too), so it can still be used by spammers to check for that.
      • eli 15y ago
        If an address doesn't exist the message will simply bounce. Or am I missing something?
        • marquis 15y ago
          Yes, here is an example of an address that doesn't exist: https://grepular.com/email_privacy_tester/lookup?code=gapz72l9ox3l95p7&js=1 https://grepular.com/email_privacy_tester/lookup?code=gapz72... If the address exists in Gmail, you get a response on "DNS Prefetch - Anchor", so it could be used to determine whether to send an email or not. I'm not a mail administrator but I can imagine how it might be useful to a spammer, e.g to stop mass bounce replies.