Hello, would seem that there is an issue here... We are now getting Xtra based customers with perminant mail delivery failures. Netblock: 210.55.172.0/23 (210.55.172.0-210.55.173.255) Record Created: Mon May 1 13:22:39 2006 GMT Record Updated: Mon May 1 13:22:39 2006 GMT Netblock: 210.55.170.0/23 (210.55.170.0-210.55.171.255) Record Created: Mon May 1 13:22:39 2006 GMT Record Updated: Mon May 1 13:22:39 2006 GMT Netblock: 210.55.174.0/24 (210.55.174.0-210.55.174.255) Record Created: Mon May 1 13:22:40 2006 GMT Record Updated: Mon May 1 13:22:40 2006 GMT $ nslookup 210.55.174.1 Server: . Address: 172.20.0.2 Name: 210-55-174-1.ipnets.xtra.co.nz Address: 210.55.174.1 I'm assuming this means that all customers sending their own mail will now have to use the xtra smtp servers? Cheers, kerry