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data/Dockerfiles/postfix/syslog-ng.conf

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+@version: 3.38
+@include "scl.conf"
+options {
+  chain_hostnames(off);
+  flush_lines(0);
+  use_dns(no);
+  dns_cache(no);
+  use_fqdn(no);
+  owner("root"); group("adm"); perm(0640);
+  stats_freq(0);
+  bad_hostname("^gconfd$");
+};
+source s_src {
+  unix-stream("/dev/log");
+  internal();
+};
+destination d_stdout { pipe("/dev/stdout"); };
+destination d_redis_ui_log {
+  redis(
+    host("redis-mailcow")
+    persist-name("redis1")
+    port(6379)
+    command("LPUSH" "POSTFIX_MAILLOG" "$(format-json time=\"$S_UNIXTIME\" priority=\"$PRIORITY\" program=\"$PROGRAM\" message=\"$MESSAGE\")\n")
+  );
+};
+destination d_redis_f2b_channel {
+  redis(
+    host("redis-mailcow")
+    persist-name("redis2")
+    port(6379)
+    command("PUBLISH" "F2B_CHANNEL" "$(sanitize $MESSAGE)")
+  );
+};
+filter f_mail { facility(mail); };
+# start
+# overriding warnings are still displayed when the entrypoint runs its initial check
+# warnings logged by postfix-mailcow to syslog are hidden to reduce repeating msgs
+# Some other warnings are ignored
+filter f_ignore {
+  not match("overriding earlier entry" value("MESSAGE"));
+  not match("TLS SNI from checks.mailcow.email" value("MESSAGE"));
+  not match("no SASL support" value("MESSAGE"));
+  not facility (local0, local1, local2, local3, local4, local5, local6, local7);
+};
+# end
+log {
+  source(s_src);
+  filter(f_ignore);
+  destination(d_stdout);
+  filter(f_mail);
+  destination(d_redis_ui_log);
+  destination(d_redis_f2b_channel);
+};