On 13/03/12 15:17, Mike Fabre wrote:
Hi, I have a postfix& dovecot server set up, and I have been given the task of making it put a arbitrary 5-10 minute delay for every email that comes through, whether it be for sent mail or received mail doesn't matter.
The first thing we thought of was to make all users use procmail, and set up a global procmail rule with a sleep in it, while this will almost certainly work, the users must not be able to run commands on the server, which they can do with a ~/.procmailrc file. I have tried to set up a postfix filter which would delay the mail (similar to this: http://pintant.cat/2010/04/14/how-to-delay-the-mails-postfix/) but that has an issue where it will only allow 5 of these filters to be running at a time, so if I where to send 10 messages with a 5 minute delay, the first 5 will take 5 minutes and the next 5 will take 10 minutes. I can change this limit within postfix but I would prefer to use a method that is more scalable. Anyone got any ideas?
I can sell you a special, limited-edition, Slow Server (tm). Featuring the latest in recycled envirofriendly technology, this machine has 128 MByte of RAM and only uses an array of old USB keys for storage. Larger mail spools can be stored on USB 1.1 external drives or over the 10 MBit ethernet. Once you start getting it loaded up with users, I'm pretty sure you'll start seeing long delays on all email processed by it :) -Toby