Spamd: Difference between revisions
Kurtseifried (talk | contribs) No edit summary |
Kurtseifried (talk | contribs) No edit summary |
||
| Line 14: | Line 14: | ||
spamd is most useful in preventing inbound spam from reaching mail servers. It can also be used as a partial application level proxy to ensure that external mail servers connecting to internal mail servers behave somewhat legitimately. Additionally spamd can be very useful in preventing outgoing spam from system that may be compromised or under the control of spammers. |
spamd is most useful in preventing inbound spam from reaching mail servers. It can also be used as a partial application level proxy to ensure that external mail servers connecting to internal mail servers behave somewhat legitimately. Additionally spamd can be very useful in preventing outgoing spam from system that may be compromised or under the control of spammers. |
||
spamd can be used to proactively block spammers with the user of black lists, such as the SPEWS database or lists of IP's by country such as [[China]] or [[South Korea]]. |
|||
spamd also supports [[greylisting]], this forces email to be delayed for a configurable period, requiring the remote end to resend mail at least once in order for it to be delivered. |
|||
spamd also supports black listing of addresses, for example you can register "spam@example.com" with spamd as a trap email address, any host attempting to send email to this address will be black listed. |
|||
= Configuration = |
|||
= Licensing = |
= Licensing = |
||
Revision as of 10:24, 29 November 2005
Spamd is one of the OpenBSD's projects. It's goal is to provide an effective light weight spam filter with a minimum of false positives.
History
spamd first appears in OpenBSD 3.2 in the release, however it was available prior to this in the -CURRENT branch.
Releases
With each release of OpenBSD spamd has been improved; small windows sizes and stuttering for example slow spam down considerably and can hold connections open for a significant amount of time.
Uses
spamd is most useful in preventing inbound spam from reaching mail servers. It can also be used as a partial application level proxy to ensure that external mail servers connecting to internal mail servers behave somewhat legitimately. Additionally spamd can be very useful in preventing outgoing spam from system that may be compromised or under the control of spammers.
spamd can be used to proactively block spammers with the user of black lists, such as the SPEWS database or lists of IP's by country such as China or South Korea.
spamd also supports greylisting, this forces email to be delayed for a configurable period, requiring the remote end to resend mail at least once in order for it to be delivered.
spamd also supports black listing of addresses, for example you can register "spam@example.com" with spamd as a trap email address, any host attempting to send email to this address will be black listed.
Configuration
Licensing
spamd is licensed under the BSD license.