Zimbra: Prevent send *SPAM* emails from self domain to self domain
Prevent send SPAM emails from self domain to self domain:
Modify file /opt/zimbra/conf/zmconfigd/smtpd_sender_restrictions.cf
:
Add string: %%contains VAR:zimbraMtaSmtpdSenderRestrictions check_sender_access lmdb:/opt/zimbra/conf/postfix_sender_access%%
Result full content file:
%%exact VAR:zimbraMtaSmtpdSenderRestrictions reject_authenticated_sender_login_mismatch%%
%%contains VAR:zimbraMtaSmtpdSenderRestrictions check_sender_access lmdb:/opt/zimbra/conf/postfix_reject_sender%%
%%contains VAR:zimbraServiceEnabled cbpolicyd …