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Andre
Asked: 2018-11-03 07:14:54 +0800 CST

SMTP Open Relay using AWS SES

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Good day,

As an ISP, We currently have an open SMTP relay that we allow access from our customer's IP ranges. This is a very low volume email platform.

We are considering to move this service to the AWS using the Simple Email Service (SES) platform for its attractive prices. However it doesn't seem to support non-authenticated relay filtered by IP addresses range.

Anyone can confirm if this is achievable or you mandatory need SMTP auth?

amazon-web-services

1 Answers

  1. Best Answer

    I’m pretty sure it’s not possible to send through SES based on IP whitelisting. Amazon needs to do the authentication to be able to bill for the messages sent by different AWS Accounts.

    If you want to use SES for your outbound SMTP traffic for your customers you can spin up a small EC2 instance (e.g. t3.micro) with e.g. Postfix and let the customers send through that. You can do IP-based whitelisting, some basic spam and antivirus checks, etc.

    From there you can despatch the emails to SES for delivery.

    Hope that helps :)

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