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Corvid mail system — Overview

SCS Computing Facilities currently supports the Corvid email system, which includes the following components:
  • Message Store — maintains email messages and provides services to access them
  • Message Transfer — software to transmit, receive, and map email addresses to user mailboxes
  • Mailing List — software to map a single email address to many. This facility allows users to send messages to a named group of addresses, manage those addresses, and configure how, what, and when the messages arrive.

Corvid features

Corvid is compatible with email clients common in SCS — including Thunderbird, MacOS Mail, Outlook, and Pine — all of which can be configured to work with it. In addition, it offers:
  • A 2GB email quota.
  • An easy-to-use webmail interface for internet mail access
  • The ability to mark mailboxes for auto-expiration of messages after a specified number of days
  • Server-side virus and spam filtering
  • Greylisting to reduce spam influx
  • Customizable mail-handling, using the Sieve scripting language
  • Mailing-list administration via Mailman
  • Support for both IMAP and POP protocols

Changes most visible to users

In Corvid's Message Store, your email resides in one logical location, your "mail drop" or "mailbox." It does not matter if you access it from your office machine, your laptop, or even a Web browser. You always see the same folders and content, independent of your client host.

Corvid's Message Transfer component binds a set of addresses to each mailbox. No two mailboxes share a common address. Addresses are removed only at a user's request and added only if they are appropriate and not already used in another account. In particular, users can set and change their email forwarding address. To see or change the addresses associated with various mailboxes, see the Corvid attribute lookup page.

The Sieve mail-filtering language replaces the ~/.maildelivery mechanism for processing email as it arrives. The associated Websieve script editor facilitates common tasks, such as spam-filtering and vacation-message setup.

The Mailman facility simplifies administering mailing lists through easy-to-navigate Web pages, instead of server-resident configuration files. Mailman subscribers have numerous options to specify how and when to deliver their mailing-list mail.