The owner's decision of 2026-10-10, as the plan has it (Who sees what:
for the global administrator the filter's socket is one of the milter
sockets on Health and Overview). Written by Sonnet, reviewed by Opus.
- internal/health: CheckMilter probes an address in Postfix's two
forms. unix:/path is the existing stat; inet:host:port is a TCP
dial with a 1 s cap, closed at once, nothing written. An address in
neither form is reported as not checkable, never as fine. Details
are plain sentences ("No answer from antispam:11332 within 1 s.",
"Connection to ... refused.", "The name ... could not be
resolved.") and never the Go error text.
- Health: with the filter on, a third row "Spam filter - inbound"
with the configured address; it counts in the socket status and in
Overview's Milter sockets card. A filter that does not answer is an
error when INBOUND_ANTISPAM_MILTER_ACTION is tempfail (inbound mail
is deferred) and a warning otherwise (mail goes through
unfiltered), and the row says which. With the filter off nothing
changes.
- Both pages are global-only; a test checks a domain administrator
never receives the address.
The dial runs with the other checks on every request and poll of
Overview and Health (5 s active, 30 s idle, none while the tab is
hidden): a dead filter costs a poll at most 1 s, and a live one sees a
connect-and-close at that rhythm per open tab.
Not changed: fixtures and screenshots (the mockup draws two sockets),
help texts. The CHANGELOG line comes with the documentation step, which
is editing that file now.
go test -count=1 ./internal/health/... ./internal/web/... ./cmd/panel
ok (seven packages)
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
60 lines
1.6 KiB
Go
60 lines
1.6 KiB
Go
package health
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import (
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"fmt"
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"os"
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)
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// Socket is the state of one milter socket Postfix connects to.
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type Socket struct {
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Name string
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// Note qualifies the name where the socket is not one of the two Postfix
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// always has ("inbound"); the Health table shows it beside the name.
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Note string
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Path string
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Present bool
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Status Status
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Detail string
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}
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// CheckSocket stats a milter socket. required distinguishes the two milters:
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// OpenDKIM runs with default_action=tempfail, so a missing socket stops mail
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// leaving the server, while the journal-milter fails open — mail still goes out,
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// only the send log stops being written.
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func CheckSocket(name, path string, required bool) Socket {
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s := Socket{Name: name, Path: path}
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if path == "" {
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s.Status = StatusUnknown
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s.Detail = "No socket path is configured."
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return s
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}
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fi, err := os.Stat(path)
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switch {
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case err != nil:
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s.Status = missingStatus(required)
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s.Detail = missingDetail(name, required)
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case fi.Mode()&os.ModeSocket == 0:
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s.Status = missingStatus(required)
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s.Detail = fmt.Sprintf("%s exists but is not a socket.", path)
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default:
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s.Present = true
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s.Status = StatusOK
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s.Detail = "Listening"
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}
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return s
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}
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func missingStatus(required bool) Status {
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if required {
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return StatusError
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}
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return StatusWarn
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}
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func missingDetail(name string, required bool) string {
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if required {
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return fmt.Sprintf("The %s socket is missing. Postfix rejects mail with a temporary error until it is back.", name)
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}
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return fmt.Sprintf("The %s socket is missing. Mail still goes out, but the send log is not being written.", name)
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}
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