BadGateway when using SMTP receive connector

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Posted on by user3371

I am trying to connect PowerAutomate to email using SMTP connector. All required data are entered:

Server is Exchange 2013

Using SSL.

But I got this error: Test connection failed. Details: BadGateway

On Exchange server side:

SMTPSubmit SMTPAcceptAnySender SMTPAcceptAuthoritativeDomainSender AcceptRoutingHeaders,Set Session Permissions
"220 exchange.domain.com Microsoft ESMTP MAIL Service ready at ",
EHLO www.microsoft.com,
SMTPSubmit SMTPAcceptAnySender SMTPAcceptAuthoritativeDomainSender AcceptRoutingHeaders,Set Session Permissions
250-exchange.domain.com Hello [X.X.X.X],
250-SIZE 36700160,
250-PIPELINING,
250-DSN,
250-ENHANCEDSTATUSCODES,
250-8BITMIME,
250-BINARYMIME,
250 CHUNKING,
Remote(SocketError)

I have already tested:

- Receive connector on my exchange (Authentication, PermissionGroups, IP scoping, FQDN) is correctly set up.

- TLS certificate for the connector is valid.

- User account for the connection is tested and working.

What else could be the problem?

Categories:

Using connectors

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manuelstgomes 6,625 on at

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HI @user3371

Can you please check if there's any kind of restriction (Whitelabel, an IP address, for example) that can be blocking access?

You can find here the list of IPs that need to be allowed for Power Automate to connect correctly.

I don't know if this will help but hope it does.

If I have answered your question, please mark your post as Solved.
If you like my response, please give it a Thumbs Up.

Cheers
Manuel

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user3371 2 on at

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No, there is no any kind of restriction. IP address I have checked, and it's correct.

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