User manual

Email Services
Cobalt Qube 3 User Manual 129
Email server overview
The Qube 3 supports email for entire domains such as www.mydomain.com. By
default, each registered user has an email account created on the Qube 3.
The Qube 3 supports multiple client and server email protocols but does not
implement virtual email users. This means that for the entire Qube 3, each user
must have a unique username.
The Qube 3 can act as a Simple Mail Transfer Protocol (SMTP) server for
sending and receiving Internet email.
Users can retrieve their email using the Post Office Protocol 3 (POP3) and the
Internet Message Access Protocol 4 (IMAP4). Users can send mail using the
Simple Mail Transfer Protocol (SMTP).
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Note: WebMail uses the IMAP email server. If the Qube 3
Administrator disables the IMAP server; users cannot access
WebMail.
The IMAP server is enabled by default.
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Important: If your Internet service provider (ISP) also provides
your Domain Name System (DNS) service, the ISP must create a
Mail Server (MX) record specifying your Qube 3 as the mail server
for your registered domain in order for the Qube 3 to receive email.
If your Qube 3 is integrated into a larger network, consult with your
network administrator for this information.
The IP address of the DNS server must be entered in the network
settings for the Qube 3 or the SMTP protocol will not work.
For more information, see “Network Integration” on page 31.
If you are providing your own DNS service through the Qube 3,
you need to create an MX record for the Qube 3. For more
information on DNS, see Appendix E, “Domain Name System,” on
page 227.