Difference between pages "Fight spam" and "Greylisting"
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imported>ThorstenStaerk (New page: There are different tools for greylisting. = Postgrey = Postgrey is greyListing software for the postfix MTA. == How to get it == Download postgrey from http://postgrey....) |
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| − | + | There are different tools for greylisting. | |
| − | |||
| − | = | + | = Postgrey = |
| + | Postgrey is [[greyListing]] [[software]] for the [[postfix]] [[MTA]]. | ||
| − | == | + | == How to get it == |
| − | + | Download postgrey from http://postgrey.schweikert.ch/ | |
| − | |||
| − | == | + | == How to set it up == |
| − | + | ||
| − | + | * [[Extract]] your [[postgrey]] [[package]] | |
| − | + | * Copy postgrey_whitelist_clients to /etc/postfix/ | |
| − | + | * Copy postgrey_whitelist_recipients to /etc/postfix/ | |
| − | + | * Add a user named postgrey: | |
| − | + | useradd -m postgrey | |
| − | . | + | * start postgrey |
| + | ./postgrey --inet 127.0.0.1:60000 | ||
| + | * make sure postgrey is listening on port 60000: | ||
| + | <pre> | ||
| + | $ nmap localhost -p59998-60002 | ||
| + | |||
| + | Starting Nmap 4.11 ( http://www.insecure.org/nmap/ ) at 2007-08-10 07:44 CEST | ||
| + | Interesting ports on lvps87-230-12-146.dedicated.hosteurope.de (127.0.0.1): | ||
| + | PORT STATE SERVICE | ||
| + | 59998/tcp closed unknown | ||
| + | 59999/tcp closed unknown | ||
| + | 60000/tcp open unknown | ||
| + | 60001/tcp closed unknown | ||
| + | 60002/tcp closed unknown | ||
| + | |||
| + | Nmap finished: 1 IP address (1 host up) scanned in 0.049 seconds | ||
| + | </pre> | ||
| + | * Make sure there is a line like this in /etc/postfix/main.cf: | ||
| + | smtpd_recipient_restrictions = permit_mynetworks, | ||
| + | permit_sasl_authenticated, | ||
| + | reject_unauth_destination, | ||
| + | check_policy_service inet:127.0.0.1:60000 | ||
| + | * restart postfix | ||
| + | /etc/init.d/postfix restart | ||
| + | |||
| + | = See also = | ||
| + | |||
| + | http://www.debuntu.org/postfix-and-postgrey-a-proactive-approach-to-spam-filtering | ||
Revision as of 10:09, 12 October 2008
There are different tools for greylisting.
Postgrey
Postgrey is greyListing software for the postfix MTA.
How to get it
Download postgrey from http://postgrey.schweikert.ch/
How to set it up
- Extract your postgrey package
- Copy postgrey_whitelist_clients to /etc/postfix/
- Copy postgrey_whitelist_recipients to /etc/postfix/
- Add a user named postgrey:
useradd -m postgrey
- start postgrey
./postgrey --inet 127.0.0.1:60000
- make sure postgrey is listening on port 60000:
$ nmap localhost -p59998-60002 Starting Nmap 4.11 ( http://www.insecure.org/nmap/ ) at 2007-08-10 07:44 CEST Interesting ports on lvps87-230-12-146.dedicated.hosteurope.de (127.0.0.1): PORT STATE SERVICE 59998/tcp closed unknown 59999/tcp closed unknown 60000/tcp open unknown 60001/tcp closed unknown 60002/tcp closed unknown Nmap finished: 1 IP address (1 host up) scanned in 0.049 seconds
- Make sure there is a line like this in /etc/postfix/main.cf:
smtpd_recipient_restrictions = permit_mynetworks,
permit_sasl_authenticated,
reject_unauth_destination,
check_policy_service inet:127.0.0.1:60000
- restart postfix
/etc/init.d/postfix restart
See also
http://www.debuntu.org/postfix-and-postgrey-a-proactive-approach-to-spam-filtering
