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Server refused public-key signature despite accepting key

This article addresses the following error message that appears when logging in using SFTP protocol and LDAP credentials.

First published date

10/11/2018 6:20 PM

Last published date

10/25/2021 6:31 PM

Overview

This article addresses the following error message that appears when logging in using SFTP protocol and LDAP credentials:

Authentication with public "key "Imported-openssh-key". Server refused public-key signature despite accepting key!

Product section

Serv-U Managed File Transfer & Serv-U FTP Server

Cause

This can occur due to the following reasons:

A connection account is not provided for LDAP authentication.
The wrong credential is specified for the connection account in LDAP configuration.

When the user is authenticated passes the public key as Serv-U cannot use the public key as the connection account. The connection account requires a password with an account name complete with a UPN suffix.

Resolution

Provide correct Connection Account and Connection Account password for LDAP host in LDAP configuration. Otherwise, Serv-U will use the credentials that are being authenticated as the connection account.

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