Re: Yahoo blocking emails from Postfix

[/dev/rob0]

On Sat, Mar 24, 2018 at 03:37:39PM -0600, @lbutlr wrote:
> On 24 Mar 2018, at 14:32, ahsan2011  wrote:
> > Basically i have the problems for all yahoo hosted mx records
> 
> Doesn't everyone?

Not that I have noticed, not for many years.

I suppose IP reputation has a lot to do with it, and also that any 
site sending marketing mail should sign up for feedback loops with 
large receivers such as Yahoo.

There are more unknown variables here that inhibit useful comment.
One thing I'd like to point out, however, is that the emails aren't 
"from Postfix", and that the blocking has little or nothing to do 
with the choice of MTA.  Yes, some of the workarounds for poor or 
nonexistent IP reputation include various transport(5) hacks, but 
ultimately to address the problem, the answer lies outside of 
Postfix.

I'd recommend:
  - strict list hygiene
  - sign up at dnswl.org
  - if money depends on deliveries, spend some on a good ESP
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Re: Yahoo blocking emails from Postfix

[@lbutlr]

On 24 Mar 2018, at 14:32, ahsan2011  wrote:
> Basically i have the problems for all yahoo hosted mx records


Doesn’t everyone?

-- 
The new Death raised his cowl. There was no face there. There was not
even a skull. Smoke curled formlessly between the robe and a golden
crown. Bill Door raised himself on his elbows. A CROWN? His voice
shook with rage. I NEVER WORE A CROWN!  You never wanted to rule.

Yahoo blocking emails from Postfix

[ahsan2011]

I have an issue with email sending speeds on postfix. the email to yahoo are
getting throttled and getting suspended temporarily. I edited the main.cf
configuration to slower down the speeds and add a delay. This works fine
with email sending at delay but i have a problem here. the mails which are
there in deferred or retry queue, when they are sent, they are sent a very
high speed and throttles the connection. is there a way to control deferred
queue speed on postfix.

Error

relay=none, delay=419785, delays=419759/25/0/0.2, dsn=4.4.2, status=deferred
(delivery temporarily suspended: lost connection with
mta5.am0.yahoodns.net[67.195.229.58] while sending RCPT TO)


smtp_destination_concurrency_limit = 3
smtp_destination_recipient_limit = 5
data_directory=/var/lib/postfix
multi_instance_name = postfix
multi_instance_enable = yes
yahoo_destination_rate_delay = 300s
aol_destination_rate_delay = 250s
smtp_extra_recipient_limit = 10
yahoo_destination_concurrency_limit = 2
aol_destination_concurrency_limit = 2
transport_maps = hash:/etc/postfix/transport

Transport file

yahoo.com  yahoo:
aol.com   aol:


master.cf
yahoo unix  -   -   n   -   -   smtp
aol unix  -   -   n   -   -   smtp

How do i control speeds for deferred queue.

Basically i have the problems for all yahoo hosted mx records. Any help
would be appeciated.



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