summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authortv <tv@krebsco.de>2022-12-05 18:53:20 +0100
committertv <tv@krebsco.de>2022-12-05 21:27:37 +0100
commit426d6e2e5cdbe52cf776400cec85036f4cb86b79 (patch)
tree76816a2018cde06ef91a2843af83a7a31505314d
parent3638c1844480ba5fb500718824bee1fb72d930ba (diff)
exim-smarthost: check SPF
-rw-r--r--krebs/3modules/exim-smarthost.nix33
1 files changed, 32 insertions, 1 deletions
diff --git a/krebs/3modules/exim-smarthost.nix b/krebs/3modules/exim-smarthost.nix
index 38cc828bb..5923b610d 100644
--- a/krebs/3modules/exim-smarthost.nix
+++ b/krebs/3modules/exim-smarthost.nix
@@ -126,8 +126,9 @@ let
domainlist sender_domains = ${concatStringsSep ":" cfg.sender_domains}
hostlist relay_from_hosts = <;${concatStringsSep ";" cfg.relay_from_hosts}
- acl_smtp_rcpt = acl_check_rcpt
acl_smtp_data = acl_check_data
+ acl_smtp_mail = acl_check_mail
+ acl_smtp_rcpt = acl_check_rcpt
never_users = root
@@ -179,6 +180,36 @@ let
accept
+ acl_check_mail:
+ accept
+ sender_domains = +sender_domains
+ hosts = +relay_from_hosts
+ deny
+ spf = fail : softfail
+ log_message = spf=$spf_result
+ message = SPF validation failed: \
+ $sender_host_address is not allowed to send mail from \
+ ''${if def:sender_address_domain\
+ {$sender_address_domain}\
+ {$sender_helo_name}}
+ deny
+ spf = permerror
+ log_message = spf=$spf_result
+ message = SPF validation failed: \
+ syntax error in SPF record(s) for \
+ ''${if def:sender_address_domain\
+ {$sender_address_domain}\
+ {$sender_helo_name}}
+ defer
+ spf = temperror
+ log_message = spf=$spf_result; deferred
+ message = temporary error during SPF validation; \
+ please try again later
+ warn
+ spf = none : neutral
+ log_message = spf=$spf_result
+ accept
+ add_header = $spf_received
begin routers