>>them loathed the idea of the envelope from address being changed at one or more hops along the way.
I think sender adress should be changed. The reason is, you didn't compose the email, you shouldn't use the sender's identity. When forwarding a email, you overtake the spam responsibility for that email in any case, so you ought to ensure your server isn't used for spam. On the other hand, you have the responsibility to ensure a forwarding user doesn't set up anyones else's address as forward, by for example using double-opt-in verification or where you really know they hold that email adress (even when authorized users are using the forward system, for example employees of a company). Couple these 2 together and you don't risk up ending up on blacklists because a user forwards a spam through your forward, because spam is both filtered AND forward is confirmed only. I have always tought it’s a ugly practice to forward the email as-is, as its same as forging someone's signature. You use someone elses identity, because you CLAIM to have received a email from their server. The receiving server on the other end cannot know this. This is why sender address should ALWAYS be rewritten when forwarding an email. _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
