I have a working phplist configuration which uses amazon-ses plugin and delivers mail without any issue for the api endpoint:
Europe (Ireland) eu-west-1 email.eu-west-1.amazonaws.com
However when I try with new api endpoint, it always fails:
Asia Pacific (Mumbai) ap-south-1 email.ap-south-1.amazonaws.com
I get the following error: InvalidClientTokenId The security token included in the request is invalid.
All necessary things are done for ap-south-1 endpoint, such as domain and email verification, moved away from sandbox.
Tried with different access id and secret, in every case eu-west-1 is working and ap-south-1 fails.
Asia Pacific (Mumbai) API endpoint is newly available SES endpoint.
Anybody face similar problems and any known workarounds?