You can configure the following mail service settings for individual
domains (Mail tab > select a domain > Mail Settings):
Mail service status. You can switch the mail service on or off for
a domain (Activate mail service on this domain).
Note: Switching off the mail service on a domain is necessary if an
external mail service (such as GMail) is used: Turning off the
local mail service ensures correct mail delivery.
Mail bounce settings. When somebody sends an email message to an
email address that does not exist under your domain, the mail server,
by default, accepts mail, processes it, and when it finds out that
there is no such a recipient under the domain, it returns the mail
back to sender with an error message. You can choose to:
Continue returning all such mail back to senders (Bounce with
Forward all such mail to the specified email address (Forward to
address option). This is also referred to as a catch-all
Note that if the outgoing mail control is turned on by your
hosting provider, the forwarding address must belong to the same
domain for which you are modifying mail bounce settings. If you
need to specify an external email address (that is, outside the
domain) or set one address for multiple domains, please contact
your hosting provider.
Forward all such mail to another mail server with the specified IP
address using the option Redirect to external mail server with
IP address (available only for Windows hosting).
Reject such mail without accepting it. If the sender’s SMTP client
is behaving properly, it will generate a “Recipient address
rejected: User unknown in virtual mailbox table” non-delivery
notice (Reject option).
Webmail. If your service plan provides the option to choose which
webmail program to use for domains, then you can select it in the
SSL/TLS certificate for webmail. To access webmail via HTTPS, select an SSL/TLS certificate
that will secure webmail. In Plesk for Windows, this will preserve the opportunity
to access webmail via HTTP because HTTP to HTTPS redirect for webmail is enabled
there by default. In Plesk for Linux, to access webmail via HTTP when
webmail is secured with an SSL/TLS certificate,
you need to turn on HTTP to HTTPS redirect for webmail in SSL It!.