Hello, emails which are fowared are usualy dumped to spam on reciever side because of SPF. Is any possibility in ISPConfig secure fowarding via distribution lists, or some other stuff?
You can ensure you have DKIM signing setup and working, and publish a DMARC policy that requires SPF or DKIM, then change your SPF policy from hard fail to soft fail.
I am not using DKIM via ISPConfig. There is alot of domain which I cant ask client to setup now dkim/dmarc/spf.. I was hoping ISPConfig can offer something like this.
I guess what you are looking for is postfix postsrs: https://serverfault.com/questions/82234/srs-sender-rewriting-when-forwarding-mail-through-postfix
Sorry, I initially misunderstood your problem. Using postsrsd would help with emails that your server relays, and is quite simple to setup. (I read the initial problem to mean email you sent gets forwarded on other sites and breaks due to your SPF record.)
