Spring Cloud Openfeign Rest Controller doesn't return exception handler response but instead hangs forever and then returns feign exception unavailable response

Describe the bug I'm using the following implementation 'org.springframework.cloud:spring-cloud-starter-openfeign:3.0.7' implementation 'org.springframework.cloud:spring-cloud-openfeign-core:3.0.7'

There's a controller advice exception handler which runs the logging but at the end it should return a Response Entity with status of 500, but instead the response hangs for 20 min and returns the 503 instead.

Comment From: OlgaMaciaszek

Hello @jmoseman01, thanks for reporting the issue. The version you've listed is no longer in OSS support. Please upgrade to 4.1.0 (Spring Cloud 2023.0.0) and Spring Boot 3.2.x. If the issue persists, please provide a minimal, complete, verifiable example that reproduces the issue.

Comment From: jmoseman01

This was not a problem with open feign. This was a problem with our smtp logger not being configured correctly.