I'm assuming this means that all customers sending their own mail will now have to use the xtra smtp servers?
On that subject, I notice that etrn.iconz.co.nz has (probably recently) started using SORBS's dynamic DNS blacklist, and I've had reported e-mail complaints from Xtra and TelstraClear DSL customers today. Generally, when we find this happening, we contact the sysadmin on the remote end and advise them that they are likely blocking a whole set of e-mail they want to receive - harder when it's an ISP. With Xtra's Port 25 push, it could be that ICONZ have decided to have a flag day, forcing everyone wishing to communicate with them, running a (small business) mail server on a DSL connection, to now use their upstream ISP's mail server - losing the ability to diagnose mail routing after it disappears "into the black box". Is this the future? Craig