Vodafone NZ is shutting down mail handling for the following domains as of today, Nov 30, 2017.
According to their website, this is primarily due to an elderly platform that’s not meeting the needs of their users, including long mail delays and too much spam. The FAQ they provided about this says that users who have forwarding accounts will still receive email, for a while. But it also says that they’re going to be rejecting mail for users.
In any case, unless the user has forwarding set up for some of those addresses, then they will not be receiving any messages. Vodafone has removed all ability for users to log into their webmail accounts. Because these are forwarded messages, some domains using DMARC may see an increase in bounces even when the mail is accepted by Vodafone.
If you have a significant number of users still at these domains, now is the time to break out your non-email contact methods to get them to update their email address with you.
(Thanks to Nancy Harris for bringing this to my attention and spreading the word.)