Is this the first time you are using this account with SES? If so then you must be in sandbox mode
If your account is still in the sandbox, you also must verify every
recipient email address except for the recipients provided by the
Amazon SES mailbox simulator.
You can only send emails from verified domains to verified domains and email addressed
In order to send to others, you must move your account out of sandbox mode by contacting AWS support and requesting it:
Is this the first time you are using this account with SES? If so then you must be in sandbox mode
SES Doc
You can follow these steps :
Moving Out of Sandbox
You can only send emails from verified domains to verified domains and email addressed In order to send to others, you must move your account out of sandbox mode by contacting AWS support and requesting it:
https://docs.aws.amazon.com/console/ses/sandbox