PSCS Wiki

User Tools

Site Tools

Trace:
how_to:incoming_smtp_feed

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revisionPrevious revision
Next revision		Previous revision
Last revisionBoth sides next revision
how_to:incoming_smtp_feed [2011/10/25 09:42] – [How to do it] paulhow_to:incoming_smtp_feed [2012/05/18 14:18] – [How to do it] paul
Line 15: Line 15:
   * Your VPOP3 server must be running all the time. Again it doesn't matter if it is down for a few minutes (or even hours) for maintenance, but this shouldn't be the norm - so you can't turn the VPOP3 PC off at night.   * Your VPOP3 server must be running all the time. Again it doesn't matter if it is down for a few minutes (or even hours) for maintenance, but this shouldn't be the norm - so you can't turn the VPOP3 PC off at night.
   * You have to allow incoming SMTP connections through your firewall (port 25 TCP) to the VPOP3 computer   * You have to allow incoming SMTP connections through your firewall (port 25 TCP) to the VPOP3 computer
-  * Your ISP has to allow incoming SMTP connections to you. A few ISPs will block port 25 by default, and require you to ask for it to be opened up. (A very few ISPs won't open it up even if you ask). This is a security thing, as badly configured mail servers can be used by spammers.+  * Your ISP has to allow incoming SMTP connections to you on port 25. A few ISPs will block port 25 by default, and require you to ask for it to be opened up. (A very few ISPs won't open it up even if you ask). This is a security thing, as badly configured mail servers can be used by spammers.
   * You have to make sure that you don't configure your VPOP3 server as an **open relay**. By default VPOP3 will not be set up as an open relay, but if you change the SMTP service **IP Access Restrictions** without understanding what you are doing you may make it into an open relay - that will allow spammers to send millions of messages through your mail server without your permission.   * You have to make sure that you don't configure your VPOP3 server as an **open relay**. By default VPOP3 will not be set up as an open relay, but if you change the SMTP service **IP Access Restrictions** without understanding what you are doing you may make it into an open relay - that will allow spammers to send millions of messages through your mail server without your permission.
   * VPOP3's **SMTP Rules** for incoming SMTP are slightly less powerful than the **Download Rules**. This is due to differences in the way the two mechanisms work - for instance you cannot have VPOP3 ask you if you want to download large messages, because that is simply not possible.   * VPOP3's **SMTP Rules** for incoming SMTP are slightly less powerful than the **Download Rules**. This is due to differences in the way the two mechanisms work - for instance you cannot have VPOP3 ask you if you want to download large messages, because that is simply not possible.
Line 36: Line 36:
   * Check ''Reject unrecognised local recipients''   * Check ''Reject unrecognised local recipients''
   * Make sure the ''SMTP Anti-Relay Protection'' method is set to ''Check Client IP Address''   * Make sure the ''SMTP Anti-Relay Protection'' method is set to ''Check Client IP Address''
-  * In the **IP Access Restrictions** tab, make sure it has your local network address in there as allowed, and do NOT have an **Allow Any* row in the restrictions unless you want to [[allowing_mail_relay_through_vpop3|allow remote users to send outgoing mail through your VPOP3 server]]. If in doubt, press the ''Default for your LAN'' button.+  * In the **IP Access Restrictions** tab, make sure it has your local network address in there as allowed, and do NOT have an **Allow Any** row in the restrictions unless you want to [[allowing_mail_relay_through_vpop3|allow remote users to send outgoing mail through your VPOP3 server]]. If in doubt, press the ''Default for your LAN'' button.
  
 When you have the SMTP Anti-Relay Protection method set to ''Check Client IP Address'' the Access Restrictions tell VPOP3 which mail servers can send outgoing mail through VPOP3 - all computers on the Internet can send mail TO VPOP3 users, so incoming mail will work fine, even if it looks as if the sending computer address may be blocked. When you have the SMTP Anti-Relay Protection method set to ''Check Client IP Address'' the Access Restrictions tell VPOP3 which mail servers can send outgoing mail through VPOP3 - all computers on the Internet can send mail TO VPOP3 users, so incoming mail will work fine, even if it looks as if the sending computer address may be blocked.
  
 If you have a support contract with us, we will be glad to help you with this, as it can sound complicated if you do not have experience in doing this. Alternatively you can [[http://www.pscs.co.uk/helpdesk/purchase.php|purchase a technical support incident (or take out a contract)]] and we wil be able to help you, including setting it up remotely for you. If you have a support contract with us, we will be glad to help you with this, as it can sound complicated if you do not have experience in doing this. Alternatively you can [[http://www.pscs.co.uk/helpdesk/purchase.php|purchase a technical support incident (or take out a contract)]] and we wil be able to help you, including setting it up remotely for you.
how_to/incoming_smtp_feed.txt · Last modified: 2018/11/14 10:45 by 127.0.0.1

Page Tools

Donate Powered by PHP Valid HTML5 Valid CSS Driven by DokuWiki