Does Cyberpanel support SRS (sender rewrite scheme) for email forwarding? I couldn’t find any details on it.
The reason for this is using an SMTP relay service, I also forward inbound email to a backup gmail address. Hower without SRS, the outbound email domain is the originating email address and not the local hostname so it gets bounced.
Error:
550 err commondomain This message from domain does not pass SPF checks from see https://mail.outboundspamprotection.com