On 18 Aug 2014, at 07:12 , Florian Pritz <bluew...@xinu.at> wrote: > Thanks for the explanation, but I already know you can request a success > DSN when sending email. My questions is different in that I only want a > success DSN if the mail has previously generated a delay DSN and I don't > want success DSNs all the time. Basically I want a "your mail is no > longer being delayed and has been delivered to the next hop" DSN.
Should be something that you can do yourself. Keep a table of the messages that have generated a delay DSN, check success DNS messages against it, and chuck out the ones that don’t match. Also, assuming you get time stamps in the DSNs, you could pre-filter by chucking out anything that is less than a minute/hour/day old, as suits your needs. -- "It was a dark and stormy night; the rain fell in torrents -- except at occasional intervals, when it was checked by a violent gust of wind which swept up the streets (for it is in London that our scene lies) rattling along the housetops, and fiercely agitating the scanty flame of the lamps that struggled against the darkness."