implement accepting dmarc & tls reports for other domains

to accept reports for another domain, first add that domain to the config,
leaving all options empty except DMARC/TLSRPT in which you configure a Domain.

the suggested DNS DMARC/TLSRPT records will show the email address with
configured domain. for DMARC, the dnscheck functionality will verify that the
destination domain has opted in to receiving reports.

there is a new command-line subcommand "mox dmarc checkreportaddrs" that
verifies if dmarc reporting destination addresses have opted in to received
reports.

this also changes the suggested dns records (in quickstart, and through admin
pages and cli subcommand) to take into account whether DMARC and TLSRPT is
configured, and with which localpart/domain (previously it always printed
records as if reporting was enabled for the domain). and when generating the
suggested DNS records, the dmarc.Record and tlsrpt.Record code is used, with
proper uri-escaping.
This commit is contained in:
Mechiel Lukkien
2023-08-23 14:27:21 +02:00
parent 9e248860ee
commit aebfd78a9f
13 changed files with 332 additions and 48 deletions

View File

@ -45,8 +45,8 @@ describe-static" and "mox config describe-domains":
# If enabled, a single DNS TXT lookup of _updates.xmox.nl is done every 24h to
# check for a new release. Each time a new release is found, a changelog is
# fetched from https://updates.xmox.nl and delivered to the postmaster mailbox.
# (optional)
# fetched from https://updates.xmox.nl/changelog and delivered to the postmaster
# mailbox. (optional)
CheckUpdates: false
# In pedantic mode protocol violations (that happen in the wild) for SMTP/IMAP/etc
@ -601,6 +601,10 @@ describe-static" and "mox config describe-domains":
# non-internationalized. Recommended value: dmarc-reports.
Localpart:
# Alternative domain for report recipient address. Can be used to receive reports
# for other domains. Unicode name. (optional)
Domain:
# Account to deliver to.
Account:
@ -640,6 +644,10 @@ describe-static" and "mox config describe-domains":
# tls-reports.
Localpart:
# Alternative domain for report recipient address. Can be used to receive reports
# for other domains. Unicode name. (optional)
Domain:
# Account to deliver to.
Account: