[CentOS] postfix tightening

Sat Apr 2 02:19:41 UTC 2005
Mark A. Lewis <mark at siliconjunkie.net>

> -----Original Message-----
> From: centos-bounces at centos.org 
> [mailto:centos-bounces at centos.org] On Behalf Of RNuno
> Sent: Friday, April 01, 2005 4:12 PM
> To: CentOS mailing list
> Subject: Re: [CentOS] postfix tightening
> Ajay Sharma wrote:
> >I run an "office" mail server and my boss would kill me if 
> we bounced a 
> >message just because the client is using a brain dead ISP.  So our 
> >approach is a little different in that we accept a lot of mail and I 
> >spend my time on tuning spamassassin.
> >
> >  
> >
> Same here. We cannot going on rejecting every server that 
> don't reverse I'ts not that I would like to but the truth is 
> MANY companies have them.

I have never understood the precived connection between reverse DNS and
spam. I have seen some go as far as if the reverse DNS does not match
the senders domain they will kick it.

I am all for blocking spam, but it is a fine line to block it without
being an ass and catching all kinds of legitimate mail in the process.
Perfect example is the one RBL that will list entire ISPs until the
sufficently grovel in their newsgroup, all the while not caring that
this is impacting hundreds or thousands of servers that are not spamming
or supporting spam.

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