Email Problems

[suhailc]

Hi,

I need some help with my DNS Administration as I have customer emails getting lost in cyberspace.

I have 3 servers:

1.) Valiant Server(using DirectAdmin
2.) Trust Server
3.) Brave Server

Now my main domain name is siterollout.net and is active on the Valiant Server using DA, and have I created the following nameservers for all my three servers:

ns1.siterollout.net - 64.247.58.144
ns2.siterollout.net - 64.247.58.145
ns3.siterollout.net - 70.84.255.226
ns4.siterollout.net - 70.84.255.227
ns5.siterollout.net - 67.18.205.186
ns6.siterollout.net - 67.18.205.187

How do I need to setup DNS and RDNS in DirectAdmin on my Valiant Server for everything to work and for customer domains/emails work on all 3 servers?

I would really appreciate some help on this!

Regards,
Suhail.

[nobaloney]

With all the information you've given us, you haven't given us enough to help you.

What's the hostname and the IP# of the Valiant server?

Which of those nameservers is on the Valiant server?

What's the name of at least one domain that isn't getting email? What nameservers does it use?

DA should automatically set up all the DNS it needs to operate; it's possible that if you're pointing DNS for domains hosted on DA somewhere else you could be breaking that.

Whether or not you need to do reverse DNS depends on whether or not your IP provider has delegated reverse DNS authority for the IPs to you; most don't, so they have to do the reverse DNS themselves.

Please give us more info.

Jeff

[suhailc]

Okay here are some more details:

Valiant Server:
Hostname: valiant.siterollout.net
IP: 64.247.58.144
ns1.siterollout.net - 64.247.58.144
ns2.siterollout.net - 64.247.58.145

Trust Server: trust.siterollout.net
Hostname: trust.siterollout.net
IP: 70.84.255.226
ns3.siterollout.net - 70.84.255.226
ns4.siterollout.net - 70.84.255.227

Brave Server: brave.siterollout.net
Hostname: brave.siterollout.net
IP: 67.18.205.186
ns5.siterollout.net - 67.18.205.186
ns6.siterollout.net - 67.18.205.187

Now the domain siterollout.net is hosted on the Valiant Server which uses DirectAdmin. My DC(NAC) told me to use DA to manage RDNS.

A domain which is having problems receiving emails is anyjobdone.co.uk which is hosted on the Trust Server(IP: 70.84.255.226)

I have no problems with emails on the Valiant Server.

[nobaloney]

Everything appears fine.

I tried (manually so I could watch for error codes) to send an email to postmaster at the domain you mentioned that was having trouble, and it WAS accepted.

Have you checked your /var/log/exim/rejectlog for why the mail is rejected?

Jeff

[neorder]

Now the domain siterollout.net is hosted on the Valiant Server which uses DirectAdmin. My DC(NAC) told me to use DA to manage RDNS.

RDNS shall be setup at NAC's control panel.

[suhailc]

Hi,

We have managed to get to the root of the problem. As jlasman rightly pointed in the direction of checking exim reject logs, it showed following error for some emails:

temporarily rejected after DATA


After checking out similar posts via Google, it seems this issue is related to exim configuration, not DNS issues.

So my server management guys disabled exiscan and emails are flowing through now properly. We just have to figure out why it kept happening with exiscan - maybe a configuration issue.

Anyway, RDNS appears correctly setup at NAC via DA, I only added one entry through the Control Panel.

But I've realised now that if i have any problems with the Valiant Server which holds the A entry for my other hostnames, then they may screw up as well. So have to think of a way of getting around that,

Anyway, thank you for your worthy advice and help. Much appreciated!

Regards,
Suhail.

[ovsoft]

I have a similar problem... how can ExiScan be disabled?

[nobaloney]

Originally posted by siterollout.com
temporarily rejected after DATA
That's a dead giveaway that exiscan is doing a temporary rejection, probably because it can't complete a test or a lookup.

Jeff