On 07/03/2015 03:23 PM, Marius Gologan wrote:
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 Un subscribe 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.

I thought that might be the case. These are emails being forwarded
through this system from what appears to be a trusted source with
clearly-defined un subscribe info, but I guess google thinks differently.

How do people generally deal with these? Are they alerted when these are
received so they can be managed/deleted or the accounts disabled, etc?

Thanks,
Alex



-----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

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