On Thu, 2010-04-15 at 10:04 -0300, Eduardo Júnior wrote: > Hi, all > > > Due the high load of e-mails over my link, I want that > my messages outgoing through more IPs with only postfix box. > > I read about that, but not in official documentation. > > I want understand how this works and how to implement. > > Anyone could point me to the respective doc? > > > Thanks, >
Why do you want to use many ip addresses , to circumvent ratelimits ? It is usually not a very good idea to spread mails over a large ip pool. What if any of your source servers get compromised and start sending spams. Then you will be sending spam over a large number of ip addresses and will get yourself in a lot of trouble for "snow-shoeing" spam If you are sending mails for mutliple senders use sender_dependent_default_transports for spreading mails over different ips. That not only helps ratelimits ,but also isolates one sender from another. Ofcourse there would be times where you would *really* have to use multiple addresses , for eg when sending to a blackberry server, with unreasonable rate thresholds, .. in that case you may have to patch postfix ( until Wietse releases this feature ) Thanks Ram
