1 Answer
- Newest
- Most votes
- Most comments
0
is the relay server an EC2? or you using third party email service like sendgrid, O365 etc?
if ec2, then be default ec2 server have smtp limit and you need to submit a case to remove this limitation.
https://aws.amazon.com/premiumsupport/knowledge-center/ec2-port-25-throttle/
Relevant content
- asked 2 years ago
- AWS OFFICIALUpdated 2 years ago
- AWS OFFICIALUpdated 2 months ago
- AWS OFFICIALUpdated a year ago