On 8/16/07, Giles Jones <[EMAIL PROTECTED]> wrote: > On 15 Aug 2007, at 23:30, Nick Johnson wrote: > > Wasn't it established that the problem was with the list server taking > > ages to send an OK response to messages, and the gmail (and some > > other) servers simply giving up? Seems like more of an issue with the > > list than with the client. > > That maybe so, but it's dumb for it to keep sending it. It should > give up after 1 or more attempts and mail the sender to say it failed > to deliver.
Not so. Transient failures of mail servers are common; if giving up after 1 or 2 attempts was common, a lot more mail would be returned 'undeliverable'. RFC 2821 says in section 4.5.4.1 (Sending Strategy): The sender MUST delay retrying a particular destination after one attempt has failed. In general, the retry interval SHOULD be at least 30 minutes; however, more sophisticated and variable strategies will be beneficial when the SMTP client can determine the reason for non-delivery. Retries continue until the message is transmitted or the sender gives up; the give-up time generally needs to be at least 4-5 days. The parameters to the retry algorithm MUST be configurable. The list server is clearly the issue here, failing to accept messages in a timely fashion. -Nick Johnson _______________________________________________ OpenMoko community mailing list [email protected] http://lists.openmoko.org/mailman/listinfo/community
