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--- reference:smtp_relay [2009/11/13 11:51] – created paul
+++ reference:smtp_relay [2018/11/14 10:45] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
 ======Mail Connectors -> Mail Senders -> SMTP Relay======
-=====Advanced Relay Settings Tab=====
-====Domain Filtering====
-The **Domain Filtering** box lets you restrict which email messages are sent via this Mail Sender.
-You specify each rule on a separate line, and the message will be sent if it matches any sender rule //and// any recipient rule. If there are only sender rules or only recipient rules, then messages will be sent if there it matches any of that type of rule.
+VPOP3 can be configured to send through an SMTP Relay server (sometimes known as a //smarthost//). This is the usual configuration for small/medium sized businesses and home users. If you have a dial-up, ADSL, Cable, FTTC etc connection, then your Internet Provider will normally give you access to their SMTP relay service.
-You can specify either the sender as
+In some cases, the Internet Provider's SMTP relay service may not be suitable. In that case, you //may// be able to use the [[SMTP Direct]] sending method, or you may be able to subscribe to an SMTP relay service from another provider (this will not require you to change your incoming mail or Internet connection configuration).
-**From: <wildcard>**
-e.g. **From: *@mydomain.com** or **From: joe@mydomain.com**
-or the recipient as
+[[mail_senders|Description of mail sending methods]]
-**<wildcard domain>**
-e.g. **customerdomain.com** or **customerdomain.* **
-So a sample might be
+=====Tabs=====
-''From: joe@mydomain.com
+The //SMTP Relay// settings in VPOP3 tell VPOP3 how to send mail through your Internet Provider's SMTP relay service.
-From: sales@mydomain.com
-customerdomain.com
-*microsoft.com''
-This would use this Mail Sender to send messages from either **joe@mydomain.com** or **sales@mydomain.com** //AND// to either **someone@customerdomain.com** or **someone@<something>microsoft.com**.
+  * [[Sender General|General]]
+  * [[Sender Relay Settings|Settings]]
-====SMTP Return Address====
+  * [[Sender Advanced Relay Settings|Advanced Relay Settings]]
-The SMTP Return Address (or Return Path) is a hidden part of a message which says where bounce messages (and other automated responses) should be sent. (It is not the same as the **Reply address** which is where your email client will send replies to messages).
+  * [[Sender Advanced Settings|Advanced Settings]]
-By default, VPOP3 will send out messages using the same Return Address as was used when the message arrived at VPOP3 (even if the message was an incoming message which is now being forwarded). However, some ISPs will check the return address and reject messages if they do not recognise it. For this reason, you can tell VPOP3 to change the Return Address if necessary.
- * The **Use Default** setting will make VPOP3 use the original return address.
- * The **Always Set To** setting will make VPOP3 use the specified email address on ALL outgoing messages sent via this Mail Sender
- * The **If the original address is not local, set to** setting will make VPOP3 check to see if the original return address is local. If it is, it will use that, otherwise it will use the specified email address instead.
-If the default setting will not work, the usual setting to use is the **If the original address is not local** setting, and set the return address to something like **postmaster@yourdomain.com**
-====Change NULL Return Addresses To====
-The SMTP standard has a very important rule, that if you do not want to receive bounce messages for your message, then you set the Return Address to a blank address (NULL). This stops bounce loops being set up where a bounce message bounces, and that bounce bounces again etc etc. As the Return Address is also often used for other automated responses such as delivery receipts, autoresponders etc, this is very important.
-However, some ISPs don't conform to the SMTP standard and will block NULL return paths in the mistaken belief that they are insecure. In this case, you can tell VPOP3 to change NULL return paths to a specified email address here. Use something like **no-one@yourdomain.com** or another email address which will //never, ever// have an autoresponder, assistant, forward, etc on it.

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