Postfix Sender Rewriting Scheme(SRS) daemon
zypper install postsrsd vi /etc/default/postsrsd SRS_DOMAIN=xxx.com vi /etc/postfix/main.cf inet_interfaces = all inet_protocols = ipv4 myhostname = smtp.xxx.com mynetworks_style = subnet mynetworks = 10.3.0.0/16, 192.168.1.0/24 relay_domains = $mydestination, hash:/etc/postfix/relay virtual_alias_domains = hash:/etc/postfix/virtual virtual_alias_maps = hash:/etc/postfix/virtual # Aiden: PostSRSd settings. sender_canonical_maps = tcp:localhost:10001 sender_canonical_classes = envelope_sender recipient_canonical_maps = tcp:localhost:10002 recipient_canonical_classes= envelope_recipient,header_recipient # Aiden: Optimizing maximal_queue_lifetime = 1d bounce_queue_lifetime = 1d maximal_backoff_time = 30m minimal_backoff_time = 5m queue_run_delay = 5m vi /etc/postfix/virtual @sss.com webmaster@company.com alert@ttt.com aiden@company.com,tom@company.com owner@ttt.com jane@company.com vi /etc/postfix/relay xxx.com OK sss.com OK ttt.com OK systemctl restart postsrsd systemctl restart postfix