Chances are it's IP reputation, who is your hosting provider? --- GPG: https://corrupted.io/kusuriya.pub
On Thu, Jun 3, 2021, at 9:27 PM, Antonino Sidoti wrote: > Hi, > > I have two OpenSMTPD servers (Sydney, Tokyo) and they are both > configured with correct DNS, PTR, DKIM, SPF, MTA-STS and Dmarc. I have > no problems sending mail to Google but with Microsoft 365 (Exchange > Online) when I send an email it always end up in Junk on the receivers > side. > > I know Microsoft may be doing some strange stuff but does anyone else > have this issue. I have a valid Microsoft 365 Email Account for my day > job and from my testing it always end up in Junk when I send mail from > my OpenSMTPD servers. The raw headers don’t say much on the Microsoft > side other than it gets SCL=5, nothing else as to why it is treated as > Junk. > > I also know of other people who have Microsoft 365 Email Accounts that > all my mail ends up in their Junk too. Can’t work this out. > > Any suggestions or tips would be appreciated. > > Thanks > Nino > > >
