1. Add that service in the Add/Remove Windows components (running W2K Server).
2. In Imail's SMTP service area of IAdmin.exe, change the Domain Name Server address field to the local IP address of the newly created DNS service.
Do I need to change any MX or A records?
Where is this newly created DNS server looking up the DNS records? (Dumb question, I know, but hey.)
What are some of the things I need to worry about when doing this?
Kevin Rogers wrote:
I received the following email today from Covad - our access provider. It looks like they have a problem with Declude checking inbound emails against a realtime blackhole list. (The problem could also be several emails we've received lately with hundreds of recipients, many of which were invalid - so it could be the NDR problem mentioned).
Does anyone know if Declude, setup normally without much modification, is using more than 1 RBL, or, irregardless of how many it uses, would it be checking the RBL 12000 times an hour for a mail server that delivers about 6000 messages a day? Or do you think this most likely has to do with the too-many-invalid-recipients problem?
Thanks. Kevin
MESSAGE FOLLOWS ------------------------------- Dear Covad Customer,
Our records indicate that your computer has made 12497 requests during the hour we monitored it which accounted for 5.13% of the total traffic to the Covad nameservers in your region. The high volume of requests made by your computer to our nameservers causes a degradation of service for other Covad customers.
The IP address implicated is:
XX.XXX.XXX.XXX
Possible causes for this excessive activity includes, but not limited to the following reasons:
-Virus infected computer(s) sending infected emails which causes Covad servers to receive MX queries for every infected message.
-Computer hosting an open proxy or relay that is being abused by a spammer. Each outbound email will generate a DNS request.
-Mail server configured to check every inbound email on a realtime blackhole list (RBL). This could oppose a problem if there are more than two lists being queried.
-Mail server configured to send a non delivery receipt (NDR) for every email received at an invalid email address. NDR messages cause Covad servers to receive DNS requests as well as generate unnecessary traffic on a customer's network. NDR messages is also a way for spammers to confirm valid email addresses which could cause mail servers to receive even more spammed emails.
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