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Modules - Mail Server - POP and IMAP

[edit] Overview

ClarkConnect provides both POP and IMAP servers for providing mail delivery to desktop clients.

[edit] Installation

If you did not select this module to be included during the installation process, you must first install the module.

[edit] Upgrade Issues

For those upgrading to version 4.x, please review the documentation on how to migrate mail to ClarkConnect 4.x

[edit] Configuration

[edit] Server Configuration

[edit] Mail Server Protocols

The mail server supports four different protocols (see screenshot):

• IMAP
• Secure IMAP
• POP
• Secure POP

We strongly suggest using the secure protocols if possible. Keep in mind, you will need to generate an SSL Certificate to enable the secure protocol.

[edit] Push E-mail

Some mail clients support the push e-mail feature (also known as the IMAP Idle feature). With this feature enabled on both the server and client, e-mail will appear in your mailbox as soon as it arrives. This feature is most useful on wireless and handheld devices. The following mail clients are known to support push e-mail (IMAP Idle):

• | Thunderbird - Many platforms
• Chattermail - Palm Treo
• FlexMail - Windows Mobile

[edit] Mail Client Configuration

[edit] Secure POP - Mozilla Thunderbird

If you are using Mozilla's Thunderbird, click on "Tools --> Account Settings", then select "Server Settings" from the navigation bar. Ensure the "Use secure connection (SSL)" checkbox is enabled.

[edit] Secure POP - MS Outlook/Outlook Express

For Outlook and Outlook Express, click on "Tools --> Accounts", select the account you wish to configure and click on the Properties button.

Next, click on the "Advanced" tab, and ensure the "This server requires a secure connection (SSL)" checkbox is enabled.

[edit] Secure POP - Other Mail Clients

For other mail clients, similar set-up/configuration will exist. Please refer to documentation for your mail client for specific instructions.

[edit] Troubleshooting

[edit] Connection Failures

Do not forget to open up firewall ports for e-mail. You only need to open the POP or IMAP ports if you plan on picking up your mail from outside your local network. The default ports are listed below:

• POP - 110
• Secure POP - 995
• IMAP - 143
• Secure IMAP - 993

[edit] Duplicate E-mails

If you find your POP mail account is downloading the same message over and over, follow the advice on the following web site

[edit] Links

• Dovecot Secure IMAP Server
• Setting up an SMTP server
• Adding users to the server
• Adding incoming firewall rules