Email Standard Mailboxes

Our standard mailbox is a POP3/IMAP mailbox. You can access our mailboxes via a range of popular email clients.

This architecture provides a highly-available, resilient and scalable service built on top of our VMWare ESX platform.

All email clients connect to Gradwell via the Internet, and then through to our network load balancers. Our load balancers then forward the network traffic on to the appropriate cluster of proxy servers. If any machines in one of the clusters is unavailable for any reason, the load balancer will forward the network traffic on to one of the remaining servers in the cluster.

We have a number of load balancers in the pool. Each load balancer is a Linux virtual machine running Linux HA. These virtual machines sit inside our VMWare ESX infrastructure.

We have a number of IMAP proxy servers in the pool. Each IMAP proxy server forwards on IMAP commands to the right mail fileserver. If we move a mailbox from one mail fileserver to another for any reason (e.g. to provide more disk space), the IMAP proxies automatically keep track of these moves, so that customers don't need to change their email client settings at all.

We have a number of POP3 proxy servers in the pool. Each POP3 proxy server forwards on POP3 commands to the right mail fileserver. If we move a mailbox from one mail fileserver to another for any reason (e.g. to provide more disk space), the POP3 proxies automatically keep track of these moves, so that customers don't need to change their email client settings at all.

We have a number of ODMR servers in the pool. Each ODMR server automatically connects to the right mail fileserver to forward on your email via SMTP. If we move a mailbox from one mail fileserver to another for any reason (e.g. to provide more disk space), the ODMR servers automatically keep track of these moves, so that customers don't need to change their email client settings at all.

webmail.gradwell.net allows you to access your Gradwell POP3/IMAP mailboxes from a standard web browser. Internally, the software we use for the webmail.gradwell.net website accesses your mailboxes via the IMAP protocol.

pop3ftp allows you to access your Gradwell POP3/IMAP mailboxes via a FTP client. Internally, the software we use for this service accesses your mailboxes directly via the POP3 protocol.

Your mailboxes are stored on our mail fileservers.

With POP3, you can download email for a single mailbox:

• Hostname: pop3.gradwell.net
• Network port: 110
• Username: <mailbox>@pop3.gradwell.net
• Password: your mailbox password

With IMAP, you can download email for a single mailbox:

• Hostname: imap.gradwell.net
• Network port: 143
• Username: <mailbox>@pop3.gradwell.net
• Password: your mailbox password

With ODMR, you can download email for a single mailbox:

• Hostname: odmr.gradwell.net
• Network port: 366
• Username: <mailbox>@pop3.gradwell.net
• Password: your mailbox password

You can also download email for multiple mailboxes at once, by first forwarding email for individual mailboxes into one large mailbox. ¹⁾.

Please note that we do not provide support for the ODMR service at this time. If you have any problems with the service, please ask in our forums rather than raise a support incident with our Customer Services team.

• Hostname: pop3ftp.gradwell.net
• Username: <mailbox>-pop3.gradwell.net or <mailbox>-domain.com
• Password: your mailbox password

Please note that the username used here is <mailbox>- rather than the usual <mailbox>@ format …

• Hostname: webmail.gradwell.com
• Username: <mailbox>@pop3.gradwell.net or <mailbox>@domain.com
• Password: your mailbox password