Am Montag, den 10.12.2007, 07:26 +0100 schrieb Luca Bertoncello: [...] > Has someone an idea why it does? > > I think that domainkeys offer a solution to the forward... If they don't, I > can deactivate them... :) Domainkeys works if not to much of the signed parts are altered. You probably realised that everbody knows about the received-header-trouble, so it is quite likely you don't a problem related to those headers.
However, a forwarding MTA might e.g. add spamassassin-headers, headers to indicate it has been scanned for virus, etc. If we were talking about a mailinglist, than the software might alter Reply-To, change the subject (to include the listname), etc. It is quite sad, but the SPF-forwarding problem would not exist if everybody used SRS. Domainkeys has less forwarding-problems but only works reliably if everybody uses domainkeys-aware-software which follows some guidelines about modifying headers and content.... To cause less problems, I only add headers with exim with ":at_start:", to avoid the signed message. Regarding domainkeys one might consider making ":at_start:" an exim-default (perhaps a bad change...) or add some option like "domainkey_aware" to the main section which might enforce strice rules regarding message-modification. Might be an interesting feature for exim 4.70 or something.... -- CU, Patrick. -- ## List details at http://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
