Here is my situation on a server where I run a Mailing List using
Mailman+Exim4.
(18:50:21 </etc/exim>) 0 $ sudo /usr/local/mailman/bin/list_members
kictanet | wc -l
960
(18:44:07 </etc/exim>) 0 $ sudo /usr/local/mailman/bin/list_members
kictanet | grep yahoo | wc -l
Password:
174
Now. to deliver mail to these 174 can take several hours, with Yahoo
servers continuously telling me that:
2016-12-30 11:43:29 1cMsmc-000PH1-85 SMTP error from remote mail server
after pipelined MAIL FROM:<mailman-bounces+YYYY=
[email protected]> SIZE=1989: 421 4.7.0 [GL01] Message from
(62.8.65.102) temporarily deferred - 4.16.50. Please refer to
http://postmaster.yahoo.com/errors/postmaster-21.html
OR
2016-12-30 11:45:09 1cMsoE-000PkX-Qg == [email protected] R=outbound_throttled
T=throttled_smtp defer (-45) H=mx-eu.mail.am0.yahoodns.net [188.125.69.79]:
SMTP error from remote mail server after pipelined MAIL
FROM:<[email protected]> SIZE=39367: 421
4.7.0 [GL01] Message from (62.8.65.102) temporarily deferred - 4.16.50.
Please refer to http://postmaster.yahoo.com/errors/postmaster-21.htm
OR even
2016-12-30 18:18:14 1cMwQR-0007cn-83 SMTP error from remote mail server
after pipelined MAIL FROM:<kictanet-bounces+johndoe=
[email protected]> SIZE=21398: 421 4.7.0 [TSS04] Messages
from 62.8.65.102 temporarily deferred due to user complaints - 4.16.55.1;
see https://help.yahoo.com/kb/postmaster/SLN3434.html
I have published SPF, DKIM and DMARC for this domain.
# Special Purpose Router to throttle sending e-mails to Yahoo
outbound_throttled:
driver = dnslookup
domains = \N^yahoo\.\N : rocketmail.com : ymail.com : y7mail.com : \
btinternet.com : btopenworld.com : att.net : sbcglobal.net :
rogers.com
retry_use_local_part
transport = throttled_smtp
throttled_smtp:
driver = smtp
connection_max_messages = 5
max_rcpt = 5
serialize_hosts = *
retry_use_local_part
tls_verify_cert_hostnames = !*
.... and still Yahoo is not playing well. It's unacceptable that some times
mail to Yahoo can stay in the queue for 4 hours when there's so much
communication going on in the mailing list.
I am sure there are people having larger yahoo subscriber database.... How
does one bribe/prod yahoo to be kind to the world? :-)
--
Best regards,
Odhiambo WASHINGTON,
Nairobi,KE
+254 7 3200 0004/+254 7 2274 3223
"Oh, the cruft."
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