How can I fix Eudora authentication failed error?

1. Set the correct SMTP port

One of the common causes of Eudora authentication failed error is caused by an incorrect port configuration for SMTP. Find the correct port for your network provider and then proceed with the steps below. Next, you need to modify the deudora.ini file and disable CRAM-MD5. Here is how to do it.

Also Read: How to download and use Outlook Express in Windows 10, 8 or 7

2. Use alternative port

If you’re still having Eudora authentication failed error, try a different combination of ports that are available for your email server.

3. Diagnose port blocking

If a security program installed on your computer is blocking the ports from creating a connection with the mail server, then disabling the security programs such as firewall and antivirus can do the trick. However, to know if the program is blocking the ports, you can start the terminal and run telnet. If you don’t see the message, follow the next solution to disable security programs on your computer.

telnet smtp.gn.apc.org 25

Note: Telnet might be disabled by default on the newer version of Windows, including Windows 10. If you get Telnet is not recognized as an internal or external command message here is how to enable Telnet on Windows 7 and above PCs. SPONSORED

Also Read: How to Remove Duplicate Contacts From Windows Live Mail

4. Disable firewall

If you have an antivirus with an active firewall installed, it can cause Eudora authentication failed error. One way to troubleshoot compatibility issues it to turn off the firewall temporarily. If you don’t have antivirus firewall activated, turn off Windows Defender Firewall. Here is how to do it. Launch Eudora again and try to send an email. If the issue is still there, move to the next solution.

5. Disable antivirus

The antivirus program may incorrectly block genuine connections on your computer due to suspicious activity. If you have an antivirus program installed, try to disable the antivirus for a limited time. Most of the antivirus allows you to turn off the protection for an hour or more. In case your antivirus is the problem, perhaps you should consider switching to Bitdefender. This antivirus offers great protection, and it won’t interfere with your system in any way, so be sure to try it out.

Get now Bitdefender Antivirus

Eudora is still one of the most popular email clients among its users, but the lack of development means the problems can remain unsolved for years. Nevertheless, we hope you fixed the Eudora authentication failed error using our solutions.

SPONSORED Name * Email * Commenting as . Not you? Save information for future comments
Comment

Δ