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add suppression list for outgoing dmarc and tls reports

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for reporting addresses that cause DSNs to be returned. that just adds noise.
the admin can add/remove/extend addresses through the webadmin.

in the future, we could send reports with a smtp mail from of
"postmaster+<signed-encoded-recipient>@...", and add the reporting recipient
on the suppression list automatically when a DSN comes in on that address, but
for now this will probably do.
This commit is contained in:
Mechiel Lukkien
2023-11-13 13:48:52 +01:00
parent 6ce69d5425
commit e24e1bee19
12 changed files with 697 additions and 17 deletions
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11
smtpserver/server_test.go
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@ -985,13 +985,12 @@ func TestTLSReport(t *testing.T) {
ts := newTestServer(t, filepath.FromSlash("../testdata/smtp/tlsrpt/mox.conf"), resolver)
defer ts.close()
run := func(tlsrpt string, n int) {
run := func(rcptTo, tlsrpt string, n int) {
t.Helper()
ts.run(func(err error, client *smtpclient.Client) {
t.Helper()
mailFrom := "remote@example.org"
rcptTo := "mjl@mox.example"
msgb := &bytes.Buffer{}
_, xerr := fmt.Fprintf(msgb, "From: %s\r\nTo: %s\r\nSubject: tlsrpt report\r\nMIME-Version: 1.0\r\nContent-Type: application/tlsrpt+json\r\n\r\n%s\r\n", mailFrom, rcptTo, tlsrpt)
@ -1017,13 +1016,15 @@ func TestTLSReport(t *testing.T) {
const tlsrpt = `{"organization-name":"Example.org","date-range":{"start-datetime":"2022-01-07T00:00:00Z","end-datetime":"2022-01-07T23:59:59Z"},"contact-info":"tlsrpt@example.org","report-id":"1","policies":[{"policy":{"policy-type":"no-policy-found","policy-domain":"xmox.nl"},"summary":{"total-successful-session-count":1,"total-failure-session-count":0}}]}`
run(tlsrpt, 0)
run(strings.ReplaceAll(tlsrpt, "xmox.nl", "mox.example"), 1)
run("mjl@mox.example", tlsrpt, 0)
run("mjl@mox.example", strings.ReplaceAll(tlsrpt, "xmox.nl", "mox.example"), 1)
run("mjl@mailhost.mox.example", strings.ReplaceAll(tlsrpt, "xmox.nl", "mailhost.mox.example"), 2)
// We always store as an evaluation, but as optional for reports.
evals := checkEvaluationCount(t, 2)
evals := checkEvaluationCount(t, 3)
tcompare(t, evals[0].Optional, true)
tcompare(t, evals[1].Optional, true)
tcompare(t, evals[2].Optional, true)
}
func TestRatelimitConnectionrate(t *testing.T) {