Amazon SES: Complaints from Yahoo

Question

In the last 3 days, the email address for one of the directors of our program has returned 128 complaints from her yahoo.com email address. She has never (at least intentionally or knowingly) marked a message as SPAM. Her email address is not on the suppression list. 
Our sending Reputation is, Healthy, with a 0.00% bounce rate and a 0.03% complaint rate (mostly yahoo/aol/verizon addresses).  These are legit emails being set to volunteers who want the emails.

The response (with personal info removed) is:

> This is an email abuse report for an email message with the message-id of [REMOVED] received from IP address [MY SERVER IP] on Wed, 25 May 22 19:15:41 UTC. 
This is the list of the complaint emails: 
[DIRECTOR]@yahoo.com

> Feedback-Type: abuse
User-Agent: Simple Email Service - SES
Version: 0.1
Received-Date: Wed, 25 May 22 19:15:41 UTC

We have similar issues with other Yahoo / AOL /Verizon email addresses and requesting removal from their lists hasn't helped. Anything else I can do besides find a different SMTP service?

Answer

I have a very similar problem. I'm getting a complaint report as follows from a @live.co.uk user who insists they are not marking the email as SPAM and want to receive the email:
This is an email abuse report for an email message with the message-id of .......
Can't seem to find out where to report this to and get an answer. All help appreciated

Amazon SES: Complaints from Yahoo

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