On Sat, 2021-07-24 at 17:14 +0200, Xavier Beaudouin via mailop wrote: > Hello, > > > > But it seems they never trys the best preference first..... > > > > > > > Are you greylisting or running pregreet tests on your MXes? > > > > Here's what I think is happening. MS first tries the priority 10 MX, > > and postscreen (or such) issues some tests that delay the transaction, > > so then MS tries the next (next, next...) priority MX and eventually > > ends up on your highest priority MX. > > I use greylisting... BUT... there is not log trace from microsoft servers on > the 10 MX... so they didn't bother about greylisting... > Maybe they had some issue... I changed the priority to 50... let's see > if there is something different...
Another possibility is routing issues. Does your primary MX(es) have address space in Level3/Lumen/CenturyLink? I have an outbound MX in that space that can't reach 1/2 the world. -Jim P. _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
