Issue Plesk Premium Email Autodiscover.xml 502 Bad Gateway 18.0.71 Update 2

Compy · 2025-08-01T11:51:59-0700

So after update to Plesk Obsidian 18.0.71 Update 2 Outlook is not connecting

proxy_error_log

2025/08/01 20:31:15 [error] 107159#0: *15 connect() failed (111: Connection refused) while connecting to upstream, client: **client ip**, server: **domain.xx**, request: "GET /Autodiscover/Autodiscover.xml HTTP/2.0", upstream: "https://**external IP**:7081/Autodiscover ... scover.xml", host: "**domain.xx**"

/etc/nginx/conf.d/fixssl.conf has been changed by the update?

# Plesk fix for CVE-2025-23048 mitigation in Apache breaking proxying
proxy_ssl_server_name on;
proxy_ssl_name $host;
proxy_ssl_session_reuse off;

reverting back to

proxy_ssl_server_name on;
proxy_ssl_session_reuse off;

map $host $webmail_host {
~^webmail\..+ $host;
default webmail.$host;
}
map $request_uri $proxied_host {
~*^/autodiscover/autodiscover.xml $webmail_host;
~*^/(\.well-known/autoconfig/|)mail/config-v1.1.xml $webmail_host;
~*^/Microsoft-Server-ActiveSync $webmail_host;
~*^/iRony $webmail_host;
default $host;
}
proxy_ssl_name $proxied_host;

did not work.

web mail is working and the server can receive emails.

Compy · 2025-08-01T12:32:45-0700

curl https://www.**domain.xx**/mail/config-v1.1.xml?emailaddress=**user**@**domain.xx**

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="x-ua-compatible" content="ie=edge">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<title>502 Bad Gateway</title>
<link rel="stylesheet" href="/error_docs/styles.css">
</head>
<body>
<div class="page">
<div class="main">
<h1>Server Error</h1>
<div class="error-code">502</div>
<h2>Bad Gateway</h2>
<p class="lead">Web server received an invalid response while acting as a gateway or proxy server.</p>
<hr/>
<p>That's what you can do</p>
<div class="help-actions">
<a href="javascript:location.reload();">Reload Page</a>
<a href="javascript:history.back();">Back to Previous Page</a>
<a href="/">Home Page</a>
</div>
</div>
</div>
</body>
</html>

Issue Plesk Premium Email Autodiscover.xml 502 Bad Gateway 18.0.71 Update 2

Compy

Basic Pleskian

Compy

Basic Pleskian

Similar threads