[Rspamd] Do not apply SPOOFED_UNAUTH on ARC_ALLOW

[Dovecot] Set sieve_redirect_envelope_from to rcpt

data/conf/dovecot/dovecot.conf

@@ -314,6 +314,7 @@ plugin {
   sieve = /var/vmail/sieve/%u.sieve
   sieve_plugins = sieve_imapsieve sieve_extprograms
   sieve_vacation_send_from_recipient = yes
+  sieve_redirect_envelope_from = recipient
   # From elsewhere to Spam folder
   imapsieve_mailbox1_name = Junk
   imapsieve_mailbox1_causes = COPY

data/conf/rspamd/local.d/composites.conf

@@ -17,6 +17,6 @@ SOGO_CONTACT_SPOOFED {
   expression = "(R_SPF_PERMFAIL | R_SPF_SOFTFAIL | R_SPF_FAIL) & ~SOGO_CONTACT";
 }
 SPOOFED_UNAUTH {
-  expression = "!MAILCOW_AUTH & !MAILCOW_WHITE & !R_SPF_ALLOW & !DMARC_POLICY_ALLOW";
+  expression = "!MAILCOW_AUTH & !MAILCOW_WHITE & !R_SPF_ALLOW & !DMARC_POLICY_ALLOW & !ARC_ALLOW";
   score = 5.0;
 }