Alexander Dalloz wrote: >> I have checked the zone information for each of the domains on Y >> and they have MX records listed correctly -- mail should first go >> to Y, then to X. >> MX 10 Y.ns1.com >> MX 15 X.ns2.com >> > If you have 2 different mail servers each for it's own set of > domains, then these DNS entries are wrong! and must lead to errors. > It would explain some errors you see in your maillog. I too, interpreted the OP comments to mean that he has two MX records for domain names that were moved from one MX server to the other. If that's the case, then Alexanders reply is correct. Your DNS MX records need to be fixed. If you actually have two MX records, but moved one or more domains mailbox's to the lower priority server, then the original server must be configured to allow relaying to the server where the new mailbox's physically exist. Like what I mentioned in my original post. Also, as Alexander pointed out, mail will still come into the original server because the DNS server TTL that the sending host is using to lookup your MX records has not timed out. This is normal behavior, but can be compensated for with a little planning on your part. Example: 1) A day or so before moving the mailbox's, run down your DNS server TTL records for your MX records. 2) Be sure that the original system that the mailbox's resided on is now configured to relay inbound e-mail to the new server that is responsible for mailbox storage. 3) Now change your DNS MX records. Steve Cowles
