SMTP is the simple mail transfer protocol. Every computer on the internet uses SMTP to deliver e-mail to its destination.
Note: Your entire internal network is configured at boot time to use mail and should not need adjustments. SMTP relies on the nameserver knowing which clients will be sending mail. Each client must have a DNS entry so that its name can be resolved. If you receive messages such as "relaying denied" when trying to send mail via the OfficeServer, this is likely the problem.
If you disable the NetWinder's SMTP server, it won't be able to receive or deliver mail for any of your users. If you use the e-mail features of your NetWinder, you will need to make sure SMTP service is enabled.
The SMTP server also has two configuration options: the User Alias List and the Denied Domains list. To get the SMTP configuration screen, click the word Configure on the SMTP server line. The configuration screen for SMTP looks like this:
SMTP User Aliases. An alias allows you to redirect user mail from a name into a particular user account or set of user accounts.
For example, you might want to redirect mail to sales@rebel.com to ffiddle@rebel.com (assuming your NetWinder is called rebel.com, and ffiddle is a user on your NetWinder). To do this, you need to create an alias from sales to ffiddle. Click on Add a new alias and answer the two prompts with sales and ffiddle respectively.
If you want, you can redirect one address to more than one person, and create simple mailing lists. For example, you might want to redirect the address smart-people@rebel.com to include einstein@rebel.com, newton@rebel.com, and mmouse@rebel.com. To do that, click Add a new alias. Answer the first prompt by typing smart-people. The second prompt asks you for destination addresses. Here, type einstein newton mmouse and press the Save button.
You can edit existing aliases in a similar way. For example, if you realize that Mickey Mouse isn't smart after all, you can remove him from the smart-people alias by clicking the word Edit next to smart-people in the alias list. Edit the list of destinations, changing it to just einstein newton, and press OK.
When you no longer need a particular e-mail alias, you can easily remove it by clicking the Remove button next to its name.
SMTP Denied Domains.If you regularly get unsolicited commercial e-mail ("spam") from particular servers or users, you can refuse to allow them to send mail to your users.
To deny mail from a particular e-mail domain, click Deny an additional domain and enter the appropriate domain name when prompted. For example, you can refuse all mail from junk.org by entering junk.org at the prompt. Similarly, you can deny mail from spam@junk.org by entering it here.
WARNING |
Most spam disguises its source address so that its original sender cannot be identified. Sometimes, the fake source address is actually a valid address belonging to someone else. Denying e-mail from the fake address will not actually eliminate your spam problems, and might accidentally cause you to refuse valid e-mail. |