I have a lot of doubts and I'm looking for someone who will enlighten me.
From the manual I read that to enable the DKIM for the emails sent just do a procedure illustrated in the manual
db configuration setprop qpsmtpd DKIMSigning enabled
signal-event email-update
qpsmtpd-print-dns
The last command returns the specifications to be entered in the domain's DNS records. Okay, but I have some doubts.
First: If I use a smarthost for sending, could this cause problems?
Second: the adkim and aspf parameters (on DMARC record) are currently set in "r"; is it necessary for adkim to be in "s" as per the specifications provided by the command on SME? I understand that with "s" a check is made on the sender but it is not clear to me how it works ...
The DKIM record that the provider preset me is "different" from the one that SME gives me; specifically this is what the provider preset me
"v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDmWTDqLKkuFsaSgrTv5VDzAGHMF3948wfrBc0O+mEt1WCQod1nP0nMSuiWFc72XeumGRM8nrMZ2NewxbWeRRt9qD4/rk2W3/tkiYRxvIqISYOqUrzJ4HT9FkUkgaKGzqt1I3mEv82W3jIHuoBYb6zB4nzpBRSTLUw55s72ozY8lQIDAQAB;"
and this is what SME gave me
I notice a significant difference; the provider has set me a much shorter public key than the one SME gives me. Among other things, it seems to me that the key is "divided" in two ("... p=first_piece_of_the_key""second_piece_of_the_key;t=y")
So hypothetically, just use the first part of the key? Or do I have to go all out?
Could someone give me some advice to avoid doing damage?
TIA