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in smtpserver, don't put unrecognized smtp commands in prometheus metrics

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can blow up prometheus storage.
This commit is contained in:
Mechiel Lukkien 2023-08-09 08:12:59 +02:00
parent f5af258075
commit 19b819d222
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1 changed files with 1 additions and 1 deletions
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2
smtpserver/server.go
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@ -719,6 +719,7 @@ func command(c *conn) {
p := newParser(args, c.smtputf8, c)
fn, ok := commands[cmdl]
if !ok {
c.cmd = "(unknown)"
if c.ncmds == 0 {
// Other side is likely speaking something else than SMTP, send error message and
// stop processing because there is a good chance whatever they sent has multiple
@ -726,7 +727,6 @@ func command(c *conn) {
c.writecodeline(smtp.C500BadSyntax, smtp.SeProto5Syntax2, "please try again speaking smtp", nil)
panic(errIO)
}
c.cmd = "(unknown)"
// note: not "command not implemented", see ../rfc/5321:2934 ../rfc/5321:2539
xsmtpUserErrorf(smtp.C500BadSyntax, smtp.SeProto5BadCmdOrSeq1, "unknown command")
}