On 22.10.2011 10:15, Dennis Guhl wrote: >> It's required for debugging purposes, writing mail filters, create >> > blacklist filters from detected spam, etc. > Disregarding end users mail filters this are all tasks for mailadmins > which can tell thier MTA to write a reliable Return-Path: header and > which have access to the corresponding maillog.
Definitely wrong. Writing mail filters like ~/.mailfilter is a user's task. Training their individual spam filters as well. And whether you're even permitted to keep the maillog that long depends on your local data protection laws. And neither the Return-Path nor the Received-Lines reveal the precise date of delivery as the From line contains. regards Hadmut