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2. E-mail and Calendar

Configuring an e-mail program (Outlook, Thunderbird, Mail, etc)
Integrated Shared Calendar
Webmail
IMPORTANT: An "Incorrect password" error in your e-mail program
Creating e-mail accounts
Accessing e-mail accounts
Supported e-mail protocols and ports
SMTP/outgoing mail ports
Problems using the SMTP server
Changing the disk space quota of a mailbox
Automatic e-mail configuration (autodiscover/autoconfig)
Differences between POP and IMAP
Viewing e-mail message headers
Mail accounts over quota
Checking e-mail through secure connection
E-mail forwarding and autoresponders
Error message "553: Sorry, that domain isn't in my list of allowed rcpthosts"
Forgotten e-mail password
Limit of the number e-mail recipients
Message size limits
Configuring MS Outlook/Outlook Express to leave a copy of downloaded messages on the server
Downloading your incoming messages via Gmail over POP3 (Gmailify)
Searching for messages in the mail server logs
Deleting all e-mail messages in a folder through the Webmail interface
Possible issues when using POP3 and SpamAssassin
Notifications for delayed outgoing messages
Mail Logs Format
Sending and reading encrypted messages via Roundcube Webmail
Sending email messages from your mailbox through SMTP via Gmail
Email subaddressing