better blocking at MTA level (off-topic)

[Hugo van der Kooij]

On Sat, 26 May 2007, Koopmann, Jan-Peter wrote:

> On Saturday, May 26, 2007 10:40 AM Hugo van der Kooij wrote:
>
>>          reject_invalid_hostname,
>>          reject_non_fqdn_hostname,
>>          reject_unknown_hostname
>>          reject_non_fqdn_sender,
>>          reject_unknown_sender_domain
>>          reject_non_fqdn_recipient,
>>          reject_unknown_recipient_domain,
>>          reject_unauth_destination
>>          check_policy_service unix:/var/spool/postfix/postgrey/socket
>
> I wish I could use all of those for strict testing. Unfortunatly too
> many legit senders of our clients are too stupid to setup their
> mail-servers correctly.

A part of these restrictions are quite common these days. If your 
customers are still not setup correctly they will have trouble with a lot 
of other organisations as well.

Even wxs.nl is now doing quite a few of these checks.

>> I have tested with Trend Micro RBL and you can take it yourself for a
>> spin for 30 days:
>>
> http://us.trendmicro.com/us/products/enterprise/network-reputation-servi
> ces/index.html
>>
>> I am not sure you will like the pricetag but they are pretty good for
>> a RBL.
>
> Just requested an eval. Thanks for the hint. Do you have an appr. price
> for the two RBLs? I cannot find any on their web-page. What about
> false-positives and a comparison to spamhouse etc.? Is TM that much
> better and worth the price?

I would not have clue about the pricetag. (I'm an engineer, not a salesman 
;-) Trend bought the RBL service in the past by taking over MAPS (or 
rather the owner of MAPS) which was among the top of the paid RBL's.

Hugo.

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