Email Server LANMailServer

How Can I Get Help with LANMailServer?

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LANMailServer Console Cannot Connect to the Windows Service...

Ensure the Windows service "LANMailServer Service" is running on the same computer as LANMailServer Console. Also check the Windows Event Log, as Windows services cannot directly display error messages. You can view the Windows Event Log via Control Panel - Administration.

I Keep Receiving a Socket Error in the Windows Event Log on Startup...

This error may have two causes:

1. Check the port settings in the LANMailServer Console under Configuration - Settings - POP3/IMAP4 Server. If you are already using another POP3/IMAP4 server, set the LANMailServer POP3/IMAP4 server to a different port. Don't forget to update the port in your email program.
2. If you're using a firewall, check whether it allows internet access through LANMailServer (Ports 25, 53, 80, 110, 143).

Problems with Antivirus Software

Disable the antivirus software or outgoing email scanning before sending emails to avoid issues with email delivery. This problem typically occurs when sending a large number or large-sized emails.

Checking Incoming Emails for Viruses

LANMailServer does not have interfaces for antivirus programs. If your antivirus program supports it, you can configure it to scan the "ScanMail" folder under the specified data folder (as set in the LANMailServer Console configuration). The antivirus program should delete infected emails from the folder, after which LANMailServer will ignore these emails.

I Receive the "Permission Denied" Message or Another Error When Retrieving Emails in the Email Program

Check the settings for the email account in your email program. Make sure the username (account name) and password are correctly entered. Also verify the access restriction settings in the LANMailServer Console under Configuration - Settings - POP3/IMAP4 Server.

Errors Occur When Sending Emails

1. Check your firewall settings.
2. Verify the settings in the LANMailServer Console under Configuration - Settings - SMTP Server, including the username and password for email sending.
3. Ensure the data folder is correctly specified in the LANMailServer Console under Configuration - Settings - General, and that LANMailServer has read/write permissions for this folder. The folder is usually c:\programdata\lanmailserver, and the System and Administrator users must have full access. Users must be able to read, execute, write, modify, and view folder contents.

When Receiving Emails, the Message "Forbidden: Your client is not allowed to access the POP3 server." or "Forbidden: Your client is not allowed to access the IMAP4 server." Appears

Check the access restriction settings in the LANMailServer Console under Configuration - POP3/IMAP4 Server.

When Sending Emails, the Message "550 Forbidden: Your client is not allowed to access the SMTP server." Appears

Verify the access restriction settings in the LANMailServer Console under Configuration - SMTP Server.

When Sending Emails, the Message "Relaying Denied, Use SMTP Auth" Appears

SMTP authentication is not enabled in your email program, or the username and password for SMTP authentication are incorrect.

When Sending Emails, Error 354 Appears: "Start Mail Input; End with . Exception: Attached File Not Found or Access Denied."

Check the internet connection to ensure it is not blocked by anonymization programs or firewalls.

When Sending Emails, Error 421 Appears: "<domain> Service Not Available, Closing Transmission Channel."

The SMTP server cannot resolve more domain names into IP addresses because the service responsible for this data resolution is not accepting additional requests. This may have two causes:

• A technical issue with the SMTP server; only the email provider can resolve this.
• No internet connection exists, or a firewall is blocking access to the DNS service (Port 53).

When Sending Emails, Error 500 or 501 Appears: "Syntax Error"

1. Check the spelling of your email address for the email account in your email program.
2. Verify your computer name; it must not contain spaces, special characters, or umlauts.
   On Windows 7 and newer: To change the computer name, click System in the Control Panel. Go to the Computer Name tab and click Change. Other operating systems have similar steps.

When Sending Emails, Error 530 Appears: "Authentication Required."

SMTP authentication is not enabled. Enable authentication for the SMTP server in your email program and enter a valid username and password. If you are using the SMTP server of your email provider, enter the username and password for the provider's SMTP server in your email program. You must also enter the same credentials in the LANMailServer Console under Configuration - Settings - SMTP Server.

When Sending Emails, Error 550 Appears: "Requested Action Not Taken: Mailbox Unavailable."

This error is returned by the SMTP server when the recipient's mailbox does not exist, indicating the email address is invalid.

When Sending Emails, Error 552 Appears: "Requested Mail Action Aborted: Exceeded Storage Allocation."

The SMTP server has insufficient space to temporarily store the email. LANMailServer will continue attempting to send the email until space becomes available. You can also inform your email provider to resolve the issue promptly.

Additional SMTP Error Codes