DNS resolution for aws-SES

Hello,

• For my aws-SES, the [nslookup email-smtp.eu-central-1.amazonaws.com] give me 2 different IPs.

• When I test the SES connection: [openssl s_client -crlf -quiet -starttls smtp -connect email-smtp.eu-central-1.amazonaws.com:587] from some EC2, it times out.

• But testing with the IP, only one of the 2 times out: [openssl s_client -crlf -quiet -starttls smtp -connect 40.15.XX.XX:587] On some machine, and from my PC, no times out with: [openssl s_client -crlf -quiet -starttls smtp -connect email-smtp.eu-central-1.amazonaws.com:587]. Any idea is welcome, thanks folks.