Please forgive asking here, but the advice is always so good. I'm trying to figure something out with DKIM that is making my head explode. It's probably so simple too, but do you think I can find an answer? No.
Suppose I have MTA (Exim/Qmail/Sendmail - doesn't matter) that is shared amongst multiple domains. A 'main' domain name - say - 'somehosting.null' exists, and signs outbound mail with DKIM using it's private key. When mail is sent from '[email protected]' DKIM verification is fine because the domain has suitable DNS records to authenticate it. Now, another domain comes on stream with this shared MTA - say 'anotherdomain.null'. How can this ever send mail that is DKIM signed when the private key is for somehosting.null? Obviously I'm missing something really obvious here in my understanding. Can anyone put me out of my misery? Kind thanks Ron -- ## List details at https://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/
