>I have an Imail 6.04 server running 43 virtual hosts.
>I was informed by Ipswitch tech support that the DNS
>needs to be setup as follows:
>
>the primary host for the server needs to have an A and
>PTR record. This is the hostname in the general tab.
make sure your DNS has reverse authority for your subnets
>All virtual hosts need to have an MX rec that points
>to the primary host.
>
>Is this correct?
Correct buy insufficient. All mailhosts AND their mailhost aliases
should have both A records and MX records. Since you can only have
one PTR per ip, Ipswitch's PTR reccommenation is a good one.
example:
domain.com. MX 10 imail.whatever.com.
mail.domain.com. MX 10 imail.whatever.com.
domain.com. A ip.ad.re.ss ; of imail.whatever.com
mail.domain.com. A ip.ad.re.ss ; of imail.whatever.com
If your DNS is BIND8, make an $INCLUDE db.common file like this:
@ NS ns1.somewhere.com.
@ NS ns2.somewhere.com.
;
@ MX 10 imail.whatever.com.
mail MX 10 imail.whatever.com.
@ A ip.ad.re.ss ; of imail.whatever.com
mail A ip.ad.re.ss ; of imail.whatever.com
Putting
$INCLUDE db.common
... in each zone file is big labor/mistake eliminator.
I've got a page on the DNS site in my sig about DNS and mail.
Len
http://BIND8NT.MEIway.com : ISC BIND 8.2.2 p5 & 8.2.3 T6B for NT4 & W2K
http://IMGate.MEIway.com : Build free, hi-perf, anti-spam mail gateways
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