Forum Discussion
AOL and YAHOO emails undeliverable from Office365
peterlVD I have two clients who have been getting these over the last few days. from Yahoo and AOL email accounts.
The error reported in both of their cases has been:
"237 temporarily deferred due to unexpected volume or user complaints"
It also refers to a link: https://postmaster.verizonmedia.com/error-codes
On this site, you can get some good information and also this link in order to set up a CFL(Complaint Feedback Loop) request for your domain which will allow you to get notifications when your domain's emails get flagged as spam.
Yahoo CFL request: https://io.help.yahoo.com/contact/index?page=contactform&locale=en_US&token=Zh/BBVqXzLHlIbokbUqVWTUbuuQeXGkGnZzhKR2JQ4O6mMQdy9JSWdtWFXvjthcYCRj9bUIFfycOfG+4GOHPHoOGa8HwDO2+0kYRtTcdR8Nja5P9HWkKh3VWfS3pyu4UdjhvwG+BCvnYFl5dToDK/w==&selectedChannel=email-icon
Note: the CFL setup will send an authentication code to "Postmaster@" for the domain you are requesting the CFL for so have that configured prior to attempting to submit this form.