On 30/03/2017 23:19, Fazzina, Angelo wrote:
If I setup DKIM, it is to be used by whom ?Is it for anyone including my own domain, when an @uconn.edu email is received, it is to be checked ? A. Does my DKIM entry in DNS help with sending from x...@example.com<mailto:x...@example.com> to x...@uconn.edu<mailto:x...@uconn.edu>? B. Does my DKIM entry in DNS help with sending from x...@uconn.edu<mailto:x...@uconn.edu>to x...@example.com<mailto:x...@example.com>? C. Does my DKIM entry in DNS help with sending from x...@uconn.edu<mailto:x...@uconn.edu>to y...@uconn.edu<mailto:y...@uconn.edu>? In “C” I am thinking emails from staff to student and vice versa. Staff on O365 and students on Google Apps. Both cloud solutions. *Student to staff*would go google -> to my MX record which is spam appliance -> postfix box -> O365 servers *Staff to Student* would go O365 -> to my MX record which is spam appliance -> postfix box -> Google servers
Not sure about your case. I will share my case. my domain mindmedia.com.sg has a dns entry like so. ;; QUESTION SECTION: ;default._domainkey.mindmedia.com.sg. IN TXT ;; ANSWER SECTION:default._domainkey.mindmedia.com.sg. 3600 IN TXT "v=DKIM1; t=s; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC/XW/fnNOu4RjJhtQGT2OfSyw5VtjqMPco1Sf9XlYMVi9dFBrPIJR6+Hmu93SOLQQvUdVIqG8PZuAG177Ke2+ZKxwEFZycuC6xey5MxLGKaVD9GuQPAeHpzRg9NQmz9qjnRkd315CgKUxqMx7pg6dcDsE2tqnU+FGxx65EAsczUQIDAQAB"
In the my email server that host emails for mindmedia.com.sg has a DKIM Private-key.
Everytime I send email using smtp through my server that is hosting my emails, an application linked with postfix, will sign my every email using the mindmedia.com.sg's DKIM Private-key.
The receiving party's smtp server will check the dkim signature header in the email with the one in the txt dns entry of default._domainkey.mindmedia.com.sg.
If it verify, then dkim has passed. This is my understanding. I hope this helps. P.V.Anthony
smime.p7s
Description: S/MIME Cryptographic Signature
