Am 15.03.2014 11:08, schrieb Tim Smith: > I have a few users who just want their email forwarded onto GMail Accounts > however these users seem to receive an > inordinate amount of spam and so I get a message from Google in my logs > stating: > > /Feb 7 09:39:53 xxxxxxx postfix/smtp[15191]: 118C8C0C2A6: host > gmail-smtp-in.l.google.com[173.194.78.26] said: > 421-4.7.0 [xx.xx.xx.xx 15] Our system has detected an unusual rate of > 421-4.7.0 unsolicited mail originating > from your IP address. To protect our 421-4.7.0 users from spam, mail sent > from your IP address has been temporarily > 421-4.7.0 rate limited. Please visit > http://www.google.com/mail/help/bulk_mail. 421 4.7.0 html to review our Bulk > Email Senders Guidelines. fk8si1147119wib.80 - gsmtp (in reply to end of DATA > command)/ > > That's fine and I totally understand why they do that but is there a way that > Postfix can flag the message so that > Google understands that we are just forwarding the message and that we are > not the originator of the spam?
"postfix can flag the message", well it does in it's Received headers but they can't be used anywhere seriously to classify a message because the only mailheaders someone can trust are the one generated in his own network and even then needs to be taken care that faked one from the internet are removed on the border MTA - so finally no and it does not matter if you are forwarding or not if you deliver spam unfiltered you are responsible no matter who is origin the above is BTW no indication of spam per se, it's a temporary reject and that messages are delivered later, but if they are *really* spam you need to find a way REJECT them on your MX for two resons: * accept and filter after queue makes you to a backscatter * not filter at all and forward makes you to a spam-source
