As per your errors, you send Unsolicited Messages. If that is the case then is not related to sending rates, but to spam complaints rate. "Our system has detected an unusual rate of unsolicited mail originating from your IP address"
1. Recipients must optin. Never send to a list acquired from somewhere or think that "is my list, I can send anything to them, even twice a day" 2. Recipients may not be interested in what you send. You need an working Unsubscribe service, bounce processor, an FBL service implemented and never bother second time an optout. 3. Reputation - is built in time based on quality (engagement), not quantity. Is not a technical tweak. -----Original Message----- From: owner-postfix-us...@postfix.org [mailto:owner-postfix-us...@postfix.org] On Behalf Of Alex Sent: Friday, July 3, 2015 8:05 PM To: postfix users list Subject: Outbound rate limiting Hi, Some time ago I had asked a question about rate limiting email to sites like gmail and yahoo using transport maps and destination_concurrency_limit, but I still can't get it right. I'm trying to throttle traffic to avoid the following restrictions from sites like google: Jul 3 12:57:37 propemail postfix-turtle/smtp[10283]: 002454148E: to=<halland...@gmail.com>, orig_to=<10...@example.com>, relay=alt1.gmail-smtp-in.l.google.com[64.233.186.27]:25, delay=101691, delays=101684/2.3/3/1.5, dsn=4.7.0, status=deferred (host alt1.gmail-smtp-in.l.google.com[64.233.186.27] said: 421-4.7.0 [66.XXX.XXX.100 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 421-4.7.0 https://support.google.com/mail/answer/81126 to review our Bulk Email 421 4.7.0 Senders Guidelines. 200si10956555qhh.75 - gsmtp (in reply to end of DATA command)) I've tried to configure a transport map for gmail and a few others using: /\@gmail\.com$/ turtle: /yahoo(\.[a-z]{2,3}){1,2}$/ turtle: /\@hotmail\.com$/ polite: transport_maps = regexp:/etc/postfix/transport_limit default_destination_concurrency_limit = 10 polite_initial_destination_concurrency = 1 # number of parallel deliveries polite_destination_concurrency_limit = 3 # seconds between each set of messages polite_destination_rate_delay = 0 # number of recipients polite_destination_recipient_limit = 5 turtle_initial_destination_concurrency = 1 turtle_destination_concurrency_limit = 2 turtle_destination_rate_delay = 1s turtle_destination_recipient_limit = 2 I'm really not sure what I'm still doing wrong. Any ideas would be greatly appreciated. Thanks, Alex
