Re: Advice on MTA blacklist

R.Smits wrote:
> Jeff Chan wrote:
>
>> Quoting Richard Smits <R.Smits@tudelft.nl>:
>>
>>
>>> Thanks for all the advice.. I think we will be using spamhaus. I am
>>> running a test and it blocks a lot of spam. Currently I use the
>>> sbl.spamhaus and pbl.spamhaus
>>> Is this wise, or should I also use the xbl and switch to zen.spamhaus....?
>>>
>> Please do not use the individual Spamhaus lists at the MTA level. Please use
>> zen.spamhaus.org
>>
>> Cheers,
>>
>> Jeff C.
>>
>>
>>
>>
> Hello,
>
> Why not ?
> We use : sbl-xbl.spamhaus.org now. It does not include the PBL (policy
> Block List)
>
> We serve a big university and we cannot afford False Positives.
> I can imagine that someone one the PBL (home user) runs a small
> mailserver and cannot connect to our server ?
>
>

do you consider it an FP if their ISP blocks port 25?

If they really run a "normal" MTA, and if that is authorized by their ISP, then they should ask to be unlisted. (They should also get a meaningful reverse DNS so that they can be "identified"). Otherwise, they should relay via their ISP...

> Or am I seeing trouble that is not there :-)
>
> I do not know the PBL as good... but I like the idea.
>
> Greetings... Richard
>
>
>
Received on Wed Oct 10 12:48:16 2007