Hello,
I have a server with SD-xxxx.dedibox.fr as hostname, and several domains hosted on it. Each domain has DKIM/DMARC enabled, and a SPF record based on the template of the DNS template of Plesk :
v=spf1 +a +mx +a:sd-xxxx.dedibox.fr -all
Can each domain use its own mx for IMAP and SMTP, or...