On Tue, Dec 07, 2004 at 10:18:28PM +0100, Marek Podmaka wrote: > My question is - does the spam software (or whatever is used for > sending majority of spams) try to re-send it?
most (if not all) spamware and viruses won't. open relays and spamhaus sites and other real MTAs will. > How often impossible to say, depends on many factors on the sending host - how it is configured, what software it is running, how busy it is, how many items in the queue, etc etc. could be every few seconds, could be several hours between delivery attempts. many mail servers implement an exponential backoff strategy. they will try again very quickly to start with and, on each failure, increase the delay (e.g. doubling the time) between attempts until it reaches a maximum delay. > and for how long? until the queue lifetime expires (usually 5 days, although it could be anything). > Now I reject by 554 code... should I change to 4xx? if it suits your needs. i wouldn't. craig -- craig sanders <[EMAIL PROTECTED]> (part time cyborg) -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
