Changes

From SME Server
Jump to navigationJump to search

SME Server:Documentation:Administration Manual:Chapter13 (view source)

Revision as of 02:13, 26 December 2007

19 bytes added ,  02:13, 26 December 2007
→‎E-mail: match server-manager order
Line 136: Line 136:     
====E-mail====
 
====E-mail====
−
  −
=====E-mail Retrieval=====
   
As shown below, this section of the server manager allows you to specify the protocol used to retrieve e-mail from your ISP and configure other settings regarding the retrieval of e-mail.
 
As shown below, this section of the server manager allows you to specify the protocol used to retrieve e-mail from your ISP and configure other settings regarding the retrieval of e-mail.
    
[[Image:Email.png]]
 
[[Image:Email.png]]
 +
 +
=====E-mail Access=====
    
[[Image:Email-access.png]]
 
[[Image:Email-access.png]]
 +
 +
* POP and IMAP server access: The options are "Private" and "Public". The former allows access only from your local network. The latter allows access from anywhere on the Internet. Think about this carefully. On the positive side, choosing "Public" access allows any of your users to retrieve their e-mail via POP/IMAP from anywhere on the Internet. The negative side is that when you do this, you are reducing your level of security, as you will now have two more services (POP and IMAP) that are listening for connections across the Internet. Both protocols also involve transmitting your password across the Internet in plain, unencrypted text, opening up the possibility that someone could intercept the packets and learn your username and password. Allowing such access can be a great convenience to your users, but if security is a concern you should consider using encrypted webmail instead.
 +
 +
{{Note box|Even with POP and IMAP configured for public access, users outside your local network are not able to send e-mail using your server as their SMTP host. Allowing this would open your server to abuse by spammers as a mail relay. Users who are travelling should either:<br />
 +
  a. use the STMP server of their local ISP;<br />
 +
  a. use PPTP to connect to your internal network; or<br />
 +
  a. use webmail to read their mail.<br />
 +
Webmail provides your users with secure access to both read and send mail via your server.
 +
}}
 +
 +
* Enable/Disable Webmail: With this option you can enable or disable the webmail component of your server. More information can be found in|Chapter 16. Webmail.
 +
 +
=====E-mail Filtering=====
 +
 +
[[Image:Email-filtering-1.png]]
 +
 +
[[Image:Email-filtering-2.png]]
 +
 +
=====E-mail Retrieval=====
    
[[Image:Email-reception-1.png]]
 
[[Image:Email-reception-1.png]]
Line 162: Line 181:  
Finally, if you have "multidrop" mail service you need to select the sort method used by the server to decide which user each message should be delivered to. Your server has a default method for this (it examines various headers such as "To" and "Resent-To") which works in most circumstances but is not suitable for certain purposes such as mailing list messages. Some ISPs add a header to each e-mail message which can help your server determine the correct recipient. If your ISP does not add a header to multidrop e-mail, select the "Default" sort method and ignore the "select sort header" field. If your ISP does add a header to multidrop e-mail, then select "Specify below" and enter the header tag provided by your ISP. Because you will experience problems with mailing-lists when using multi-drop e-mail, we strongly recommend that you work with your ISP to have a special header added to each message. The "Default" sort method should be only used as a last resort.
 
Finally, if you have "multidrop" mail service you need to select the sort method used by the server to decide which user each message should be delivered to. Your server has a default method for this (it examines various headers such as "To" and "Resent-To") which works in most circumstances but is not suitable for certain purposes such as mailing list messages. Some ISPs add a header to each e-mail message which can help your server determine the correct recipient. If your ISP does not add a header to multidrop e-mail, select the "Default" sort method and ignore the "select sort header" field. If your ISP does add a header to multidrop e-mail, then select "Specify below" and enter the header tag provided by your ISP. Because you will experience problems with mailing-lists when using multi-drop e-mail, we strongly recommend that you work with your ISP to have a special header added to each message. The "Default" sort method should be only used as a last resort.
   −
=====Other E-mail Settings=====
+
=====E-mail Delivery=====
 
This screen presents you with additional options for controlling how your system handles e-mail.
 
This screen presents you with additional options for controlling how your system handles e-mail.
   Line 177: Line 196:  
* Internet provider's SMTP server: Normally the server will send outgoing messages directly to their intended destination. If, however, you have an unreliable connection or are using a residential Internet service, it may be advisable to route e-mail via your provider's SMTP server. In that case, you should enter the SMTP server's hostname or IP address here.
 
* Internet provider's SMTP server: Normally the server will send outgoing messages directly to their intended destination. If, however, you have an unreliable connection or are using a residential Internet service, it may be advisable to route e-mail via your provider's SMTP server. In that case, you should enter the SMTP server's hostname or IP address here.
 
In fact, if you have a temporary dial-up connection to the Internet, you may find that you need to use your ISP's mail server in order to deliver mail to some locations. As a reaction to the huge volume of unsolicited commercial e-mail ("spam"), many Internet sites are refusing direct SMTP connections from IP addresses that are known to be temporary dial-up accounts. For this reason, you may need to use your ISP's mail server since it will have a permanent connection to the Internet.
 
In fact, if you have a temporary dial-up connection to the Internet, you may find that you need to use your ISP's mail server in order to deliver mail to some locations. As a reaction to the huge volume of unsolicited commercial e-mail ("spam"), many Internet sites are refusing direct SMTP connections from IP addresses that are known to be temporary dial-up accounts. For this reason, you may need to use your ISP's mail server since it will have a permanent connection to the Internet.
−
  −
* POP and IMAP server access: The options are "Private" and "Public". The former allows access only from your local network. The latter allows access from anywhere on the Internet. Think about this carefully. On the positive side, choosing "Public" access allows any of your users to retrieve their e-mail via POP/IMAP from anywhere on the Internet. The negative side is that when you do this, you are reducing your level of security, as you will now have two more services (POP and IMAP) that are listening for connections across the Internet. Both protocols also involve transmitting your password across the Internet in plain, unencrypted text, opening up the possibility that someone could intercept the packets and learn your username and password. Allowing such access can be a great convenience to your users, but if security is a concern you should consider using encrypted webmail instead.
  −
  −
{{Note box|Even with POP and IMAP configured for public access, users outside your local network are not able to send e-mail using your server as their SMTP host. Allowing this would open your server to abuse by spammers as a mail relay. Users who are travelling should either:<br />
  −
  a. use the STMP server of their local ISP;<br />
  −
  a. use PPTP to connect to your internal network; or<br />
  −
  a. use webmail to read their mail.<br />
  −
Webmail provides your users with secure access to both read and send mail via your server.
  −
}}
  −
  −
* Enable/Disable Webmail: With this option you can enable or disable the webmail component of your server. More information can be found in|Chapter 16. Webmail.
  −
  −
=====E-mail Filtering=====
  −
  −
[[Image:Email-filtering-1.png]]
  −
  −
[[Image:Email-filtering-2.png]]
      
====Review Configuration====
 
====Review Configuration====
Retrieved from "https://wiki.koozali.org/Special:MobileDiff/7009"

Navigation menu