10-13-2019 06:49 PM - edited 10-13-2019 07:02 PM
Hello,
Just want to ask assistance who are facing issue in sending email to Yahoo domain.
Message 151397183 to email@yahoo.com delayed. Reason: 4.3.2 - Not accepting messages at this time ('421', ['4.7.0 [TSS04] Messages from "Server IP Address" temporarily deferred due to user complaints - 4.16.55.1; see https://help.yahoo.com/kb/postmaster/SLN3434.html']) []
I already set limit on the ESA based on the recommended on this KBA https://www.cisco.com/c/en/us/support/docs/security/email-security-appliance/118573-technote-esa-00.html but still we got same error.
Hope you can help me to figure this out.
10-13-2019 09:18 PM
10-14-2019 01:05 AM
10-14-2019 02:18 PM
10-28-2019 02:35 AM
10-28-2019 04:28 PM
10-28-2019 04:31 PM
10-29-2019 12:45 AM
Hi,
With regards on your DKIM recommendation, what should be the value of the DKIM and also where we will implement the DKIM?
Hoping you understand me because honestly i'm not familiar on using DKIM DMARC and SPF.
Thank you for your response appreciate it.
10-29-2019 12:54 AM
Happy to write a smaller best practices document if I find the time next week.
DKIM means that every outgoing email form your domain will have an additional signature (DKIM public key) which can be validated by any 3rd party to make sure that the email is really coming from you. Yahoo, comcast , hotmail and outlook are known domains which gibe you a higher rating if a message is DKIM signed.
To get started just follow the following instruction:
I hope that helps
-Marc
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