On Thu, 24 Jun 2004, Thomas Berger wrote: > Tracy wrote: > > |>XMAIL should drop servers which gave 5xx errors from further retries > |>in transmission but should continue as long there are any servers > |>left. This will be a bit inconvenient when (due to misconfiguration) > |>some of the MX time out permanently because XMAIL will try again and > |>again for the whole retry period and not bounce immediately. > | > | > | There are many places where this tactic will cause the sending MTA to be > | immediately blacklisted locally - and a few places that will escalate a > | complaint back to both your upstream and to various DNSBLs. > | > | Any 5xx error means "quit trying, give up" - that's what "permanent > error" > | means. MTA admins tend to get upset when you ignore the "permanent" > part of > | "permanent error" and keep pecking away at their servers. > > "Permanent" ist not "Global". IMO 5xx means "quit trying *ME* (please)". > In the specs I don't see anything supporting the theory "One receiving > MTA speaks representatively for all others" (there IS a difference > between DNS and SMTP :-)
If an MTA is *listed* for a given domain, it means it has authority on such domain in the same way all its siblings MXs have. So, if such MX returns 5xx, either it is a permanent error or or it a misconfigured server (since local-related failures should be handled with 4xx, and permanent ones should be handled with the removal of the MX for such domain). In both cases XMail does not give a damn, and quit trying. - Davide - To unsubscribe from this list: send the line "unsubscribe xmail" in the body of a message to [EMAIL PROTECTED] For general help: send the line "help" in the body of a message to [EMAIL PROTECTED]
