Martin, Just so we're all on the same page, email routing is never directly related to IP allocations, it's MX bound if properly standards compliant. And if the canonical MX record is directing to the alternate customer, the problem lies with DNS not email.
Kind regards Paul Wilkins On Tue, 21 May 2019 at 10:14, Martin - StudioCoast < martin.sincl...@studiocoast.com.au> wrote: > Been there, done that. The support responses I have received show a lack > of understanding of the issue unfortunately... > > On 21/05/2019 8:16 am, Greg Lipschitz wrote: > > Hi Martin > > > The best way to get Office 365 support is log in to the portal as the > tenancy administrator and open a support request. > > > They are extremely good at finding these sorts of issues and have a range > of PowerShell scripts they can run against your tenancy to find the issue. > > > Cheers > > Greg > > _______________________________________________ > AusNOG mailing list > AusNOG@lists.ausnog.net > http://lists.ausnog.net/mailman/listinfo/ausnog >
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