SES API Error: Illegal address

Your software
My Mautic version is: 3.3.3
My PHP version is: 7.4.11
My Database type and version is: MariaDB 10.4

Your problem
My problem is:
I configured Mautic to send emails through Amazon SES API and test emails are working OK, but for every email sent Mautic logs the following message:

These errors are showing in the log:
mautic.ERROR: SES API Error: Illegal address

Steps I have tried to fix the problem:
I reverted to sending via SMTP (through SES) and all seems OK, no log messages at all. Is the above error message something to be worried about? I googled it, but without success.

check that your “From” email and domain are added and verified through SES

Hi, thanks for the reply! :smiley:

Yes, my domain and “from” email address are verified through SES. As I said, email sending is working fine through SES, using both API and SMTP. My issue is with the error message that is logged every time an email is sent through SES using the API method, even though everything seems to be ok. I got back to sending using SES SMTP to stop filling the log file with this error messages.