Email authentication
The basics are in place but can be hardened.
Authorizes which servers may send mail for the domain
SPF is published and within limits.
v=spf1 a:wapp-smtp.psu.ac.th a:smtp.psu.ac.th ip4:202.29.150.0/24 ip4:202.29.149.0/24 ip4:202.29.148.0/24 ip4:202.29.147.0/24 include:_spf.google.com include:spf.protection.outlook.com ~allCryptographically signs outgoing mail (best-effort selector probe)
DKIM key published for 3 known selectors.
Tells receivers what to do with mail that fails SPF and DKIM
DMARC is published but not fully enforcing.
v=DMARC1;p=quarantine;ruf=mailto:[email protected];fo=s;Enforces TLS for inbound mail and prevents downgrade attacks
MTA-STS is published but not enforcing.
v=STSv1; id=20240528151100Receives reports about TLS delivery failures
TLS reporting is configured.
v=TLSRPTv1; rua=mailto;[email protected]Displays your verified brand logo in supporting inboxes
No BIMI record. No brand logo is published for inboxes.
Checks query live DNS over Cloudflare and the public MTA-STS policy endpoint. DKIM selectors cannot be listed from DNS, so DKIM detection probes common provider selectors only.