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Yahoo 421 temporarily deferred
Team,

Can anyone guide me here? I have been trying to fix this issue for almost a
week now but no luck.

So, basically when yahoo say *"421 4.7.0 [TSS04] Messages from X.X.X.X
temporarily deferred due to user complaints - 4.16.55.1; see
https://help.yahoo.com/kb/postmaster/SLN3434.html
<https://help.yahoo.com/kb/postmaster/SLN3434.html>*"

I want to make sure that no further delivery we'll be attempted to yahoo if
there "421" temporarily deferred error.

Right now, what is happening is it actually keeps trying for all
MX records and hitting yahoo for the same message again and again.

I have the following retry configuration but that doesn't work and it's
still sending to yahoo multiple times.
++++++++++++++++++++++++++++++++++++++++++++++++++
begin retry

yahoo.com * F,4h,2h;
G,2h,2h,1.5; F,10d,8h
#+secondarymx * F,4h,1m;
G,16h,1h,1.5; F,4d,8h
* * F,4h,15m;
G,16h,1h,1.5; F,5d,8h
ymail.com * F,4h,2h;
G,2h,2h,1.5; F,10d,8h
gmail.com * F,4h,2h;
G,2h,2h,1.5; F,10d,8h

Can anyone help me please.



Thanks
Deepak Sharma
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Re: Yahoo 421 temporarily deferred [ In reply to ]
On Sun, Jul 26, 2020 at 11:35:09PM +0530, deepaksharma559--- via Exim-users wrote:
> I want to make sure that no further delivery we'll be attempted to yahoo if
> there "421" temporarily deferred error.
>
> Right now, what is happening is it actually keeps trying for all
> MX records and hitting yahoo for the same message again and again.
>
> I have the following retry configuration but that doesn't work and it's
> still sending to yahoo multiple times.
> ++++++++++++++++++++++++++++++++++++++++++++++++++
> begin retry
>
> yahoo.com * F,4h,2h;
> G,2h,2h,1.5; F,10d,8h
> #+secondarymx * F,4h,1m;
> G,16h,1h,1.5; F,4d,8h
> * * F,4h,15m;
> G,16h,1h,1.5; F,5d,8h

Those rules have no lines for SMTP code 421.
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Eugene Berdnikov

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Re: Yahoo 421 temporarily deferred [ In reply to ]
On Mon, Jul 27, 2020 at 05:30:17PM +0530, deepaksharma559@gmail.com wrote:
> What I want is when there is a single failure for "421" temporary failure
> then it will not try until the next unit assigned retry time could not be
> reached.

Read docs for retry configuration. To catch specific 4xx codes
you have to assign explicit actions for them in retry rules.
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Eugene Berdnikov

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