Because of the monitoring mode, when you move to p=reject, with all the
aggregate reports, you know exactly how much mail you will loose.
Only from reports coming from DMARC-checking mail servers that also
provide reports. You may well lose other mail delivery to servers that
fail to deliver mail because of DMARC but that don't supply reports to the
owning domain, I think?
Anthony
--
www.fonant.com - Quality web sites
Tel. 01903 867 810
Fonant Ltd is registered in England and Wales, company No. 7006596
Registered office: Amelia House, Crescent Road, Worthing, West Sussex,
BN11 1QR
