Hello List: I am operating a smallish postfix server for my law office. Many of our contacts use Google's calendar, and when they enter one of our email addresses into their calendar entries, we receive a flood of annoying emails. Invitations / reminders / updates / changes / cancellations of meetings.
Initially, after receiving twelve emails for a single calendar entry repeated weekly for three months, I wanted to outright reject the Google spam. After the second change within 24 hours, I also wanted to fire the client. But maybe there is smarter way to deal with this annoyance, such as re-directing the emails to an auto-responder or some other form of automated processing (/dev/null comes to my mind too)? Below is the PCRE that I came up with to catch the offending messages, without blocking other correspondence (the contacts and their organizations are likely to use Google's SMTP for their regular emails): /^Return-Path:(.+)(calendar-server.bounces.google.com)(.*)/ REJECT No Google Calendar Spam Here where/how do I best add the restriction to Postfix? I was thinking to make it an smtpd_restriction_classes so that I can apply it to some recipients but not to others. But maybe rewriting the destination address, or sending an auto- responder right away? I just want to get that spam out of the way in the most elegant way possible. Thanks in advance for your help, Yuv
