![]() Knowing this information could be useful in a number of situations. What we are interested in is the SES MTA’s IP address (outgoing IP address). ![]() Each MTA has an IP address associated with it. When SES connects to an ISP to deliver an email using the standard email sending protocol (SMTP), a connection is established between the SES mail transfer agent (MTA) that sends out the email and the ISP’s MTA that will receive it. What is an outgoing IP address and why should I care? One of the questions we get from time to time here at Amazon SES is “What IP address is my email going out through?” In this blog post we will see how to find the outgoing IP addresses that SES is using by querying the Amazon SES SPF records in DNS.
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