[LBBS-23] net_smtp: DMARC reports not sent due to rejection of localhost

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The BBS things the DMARC reports submitted from localhost are mail relay attempts, but these should actually be allowed. Should be resolved either by code modification or updating sample configuration to permit this:

bbs_ip_match_ipv4: IP match: 127.0.0.1 -> 127.0.0.1
[2024-04-17 00:00:08.338]   DEBUG[1832766]: net_smtp.c:601 handle_helo: 0x7f9898feff90 <= 250-AUTH LOGIN PLAIN
[2024-04-17 00:00:08.338]   DEBUG[1832766]: net_smtp.c:602 handle_helo: 0x7f9898feff90 <= 250-AUTH=LOGIN PLAIN
[2024-04-17 00:00:08.338]   DEBUG[1832766]: net_smtp.c:604 handle_helo: 0x7f9898feff90 <= 250-PIPELINING
[2024-04-17 00:00:08.338]   DEBUG[1832766]: net_smtp.c:605 handle_helo: 0x7f9898feff90 <= 250-SIZE 5000000
[2024-04-17 00:00:08.338]   DEBUG[1832766]: net_smtp.c:606 handle_helo: 0x7f9898feff90 <= 250-8BITMIME
[2024-04-17 00:00:08.338]   DEBUG[1832766]: net_smtp.c:607 handle_helo: 0x7f9898feff90 <= 250-ETRN
[2024-04-17 00:00:08.338]   DEBUG[1832766]: net_smtp.c:609 handle_helo: 0x7f9898feff90 <= 250-STARTTLS
[2024-04-17 00:00:08.338]   DEBUG[1832766]: net_smtp.c:620 handle_helo: 0x7f9898feff90 <= 250 ENHANCEDSTATUSCODES
[2024-04-17 00:00:08.546]   DEBUG[1832766]: net_smtp.c:2870 handle_client: 0x7f9898feff90 => MAIL FROM:<dmarc-noreply@$BBS_HOSTNAME>
[2024-04-17 00:00:08.546]   DEBUG[1832766]: net_smtp.c:999 handle_mail: 0x7f9898feff90 <= 250 2.1.0 OK
[2024-04-17 00:00:08.588]   DEBUG[1832766]: net_smtp.c:2870 handle_client: 0x7f9898feff90 => RCPT TO:<[email protected]>
[2024-04-17 00:00:08.588]   DEBUG[1832766]: mod_mail.c:112 mail_domain_is_local: Domain 'google.com' is not local
[2024-04-17 00:00:08.594]   DEBUG[1832766]: net_smtp.c:1093 handle_rcpt: 0x7f9898feff90 <= 550 5.7.0 Mail relay denied. Forwarding to remote hosts disabled
[2024-04-17 00:00:08.595]   DEBUG[1832766]: net_smtp.c:2870 handle_client: 0x7f9898feff90 => RSET
[2024-04-17 00:00:08.595]   DEBUG[1832766]: net_smtp.c:352 smtp_tarpit: 0x7f9898feff90: Current number of SMTP failures: 1
[2024-04-17 00:00:08.595]   DEBUG[1832766]: net_smtp.c:2758 smtp_process: 0x7f9898feff90 <= 250 2.1.5 Flushed
[2024-04-17 00:00:08.730]   DEBUG[1832766]: net_smtp.c:2870 handle_client: 0x7f9898feff90 => MAIL FROM:<dmarc-noreply@$BBS_HOSTNAME>
[2024-04-17 00:00:08.731]   DEBUG[1832766]: net_smtp.c:352 smtp_tarpit: 0x7f9898feff90: Current number of SMTP failures: 1
[2024-04-17 00:00:08.731]   DEBUG[1832766]: net_smtp.c:999 handle_mail: 0x7f9898feff90 <= 250 2.1.0 OK
[2024-04-17 00:00:08.733]   DEBUG[1832766]: net_smtp.c:2870 handle_client: 0x7f9898feff90 => RCPT TO:<[email protected]>
[2024-04-17 00:00:08.733]   DEBUG[1832766]: net_smtp.c:352 smtp_tarpit: 0x7f9898feff90: Current number of SMTP failures: 1
[2024-04-17 00:00:08.733]   DEBUG[1832766]: mod_mail.c:112 mail_domain_is_local: Domain 'fastmaildmarc.com' is not local
[2024-04-17 00:00:08.733]   DEBUG[1832766]: net_smtp.c:1093 handle_rcpt: 0x7f9898feff90 <= 550 5.7.0 Mail relay denied. Forwarding to remote hosts disabled
[2024-04-17 00:00:08.734]   DEBUG[1832766]: net_smtp.c:2870 handle_client: 0x7f9898feff90 => RSET
[2024-04-17 00:00:08.734]   DEBUG[1832766]: net_smtp.c:352 smtp_tarpit: 0x7f9898feff90: Current number of SMTP failures: 2
[2024-04-17 00:00:08.734]   DEBUG[1832766]: net_smtp.c:2758 smtp_process: 0x7f9898feff90 <= 250 2.1.5 Flushed
[2024-04-17 00:00:08.821]   DEBUG[1832766]: net_smtp.c:2870 handle_client: 0x7f9898feff90 => MAIL FROM:<dmarc-noreply@$BBS_HOSTNAME>
[2024-04-17 00:00:08.821]   DEBUG[1832766]: net_smtp.c:352 smtp_tarpit: 0x7f9898feff90: Current number of SMTP failures: 2
[2024-04-17 00:00:08.821]   DEBUG[1832766]: net_smtp.c:999 handle_mail: 0x7f9898feff90 <= 250 2.1.0 OK
[2024-04-17 00:00:08.822]   DEBUG[1832766]: net_smtp.c:2870 handle_client: 0x7f9898feff90 => RCPT TO:<[email protected]>
[2024-04-17 00:00:08.822]   DEBUG[1832766]: net_smtp.c:352 smtp_tarpit: 0x7f9898feff90: Current number of SMTP failures: 2
[2024-04-17 00:00:08.822]   DEBUG[1832766]: mod_mail.c:112 mail_domain_is_local: Domain 'rua.agari.com' is not local
[2024-04-17 00:00:08.822]   DEBUG[1832766]: net_smtp.c:1093 handle_rcpt: 0x7f9898feff90 <= 550 5.7.0 Mail relay denied. Forwarding to remote hosts disabled
[2024-04-17 00:00:08.823]   DEBUG[1832766]: net_smtp.c:2870 handle_client: 0x7f9898feff90 => RSET
[2024-04-17 00:00:08.823]   DEBUG[1832766]: net_smtp.c:352 smtp_tarpit: 0x7f9898feff90: Current number of SMTP failures: 3
[2024-04-17 00:00:08.823]   DEBUG[1832766]: net_smtp.c:2758 smtp_process: 0x7f9898feff90 <= 250 2.1.5 Flushed
[2024-04-17 00:00:08.852]   DEBUG[1832766]: net_smtp.c:2870 handle_client: 0x7f9898feff90 => QUIT
[2024-04-17 00:00:08.852]   DEBUG[1832766]: net_smtp.c:352 smtp_tarpit: 0x7f9898feff90: Current number of SMTP failures: 3
[2024-04-17 00:00:08.852]   DEBUG[1832766]: net_smtp.c:2763 smtp_process: 0x7f9898feff90 <= 221 2.0.0 Closing connection
[2024-04-17 00:00:08.852]   DEBUG[1832766]: mod_mail.c:228 mailbox_dispatch_event: Dispatching mailbox event 'Logout'
[2024-04-17 00:00:08.852]   DEBUG[1832766]: node.c:2086 bbs_node_exit: Node 5 has ended its SMTP session
[2024-04-17 00:00:08.852]   DEBUG[1832766]: node.c:531 node_shutdown: Terminating node 5

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