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Code Issues Releases Activity

chore(Postfix): disable DNSBLs (#3069)

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This commit is contained in:
Georg Lauterbach
2023-02-11 00:24:09 +01:00
committed by GitHub
parent 29d8dcafb0
commit ac1df91181
7 changed files with 20 additions and 35 deletions
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17
docs/content/config/environment.md
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@ -75,13 +75,7 @@ Enable or disable Rspamd.
!!! warning "Current State"
Rspamd-support is under active development. Be aware that breaking changes can happen at any time.
Currently, rspamd is integrated into Postfix as a milter. However, there is no official DKIM/DMARC support for rspamd in DMS as of now (WIP). To get more information, see [the detailed documentation page for Rspamd][docs-rspamd].
!!! warning "Rspamd and DNS Block Lists"
When you use Rspamd, you might want to use the [RBL module](https://rspamd.com/doc/modules/rbl.html). If you do, make sure your DNS resolver is set up correctly (i.e. it should be a non-public recursive resolver). Otherwise, you [might not be able](https://www.spamhaus.org/faq/section/DNSBL%20Usage#365) to make use of the block lists.
Rspamd-support is under active development. Be aware that breaking changes can happen at any time. To get more information, see [the detailed documentation page for Rspamd][docs-rspamd].
- **0** => disabled
- 1 => enabled
@ -104,10 +98,13 @@ Amavis content filter (used for ClamAV & SpamAssassin)
##### ENABLE_DNSBL
This enables the [zen.spamhaus.org](https://www.spamhaus.org/zen/) DNS block list in postfix
and various [lists](https://github.com/docker-mailserver/docker-mailserver/blob/f7465a50888eef909dbfc01aff4202b9c7d8bc00/target/postfix/main.cf#L58-L66) in postscreen.
This enables DNS block lists in _Postscreen_. If you want to know which lists we are using, have a look at [the default `main.cf` for Postfix we provide](https://github.com/docker-mailserver/docker-mailserver/blob/master/target/postfix/main.cf) and search for `postscreen_dnsbl_sites`.
Note: Emails will be rejected, if they don't pass the block list checks!
!!! danger "A Warning On DNS Block Lists"
Make sure your DNS queries are properly resolved, i.e. you will most likely not want to use a public DNS resolver as these queries do not return meaningful results. We try our best to only evaluate proper return codes - this is not a guarantee that all codes are handled fine though.
**Note that emails will be rejected if they don't pass the block list checks!**
- **0** => DNS block lists are disabled
- 1 => DNS block lists are enabled