Sendmail on a LAN

Ed Greshko Ed.Greshko at
Wed Aug 18 14:13:20 UTC 2010

 On 08/18/2010 09:13 PM, Tim wrote:
> The trouble is that the problem is external, and out of your control.
> Others can use any number of filtering techniques, good or bad.  If your
> on just one black list, that's a problem.

Yes, many things are external to ones system and out of ones control. 
And, yes, it may be problem...but it may only be a minor annoyance. 
> You can also strike the other blacklisting issue.  e.g. One of my former
> ISPs, Optus, was on many blacklists for doing sweet Fanny Adams about
> spam coming through their systems.  Any IP associated with them was
> tarred with that brush, and your mail could get rejected, no matter how
> you tried sending (your own SMTP server, their SMTP server...).  To make
> matters worse, they're one of the big ISPs and telcos in this country,
> and the backbone for many smaller ISPs.  That situation went on for
> years and years.  Long after I left them they were still in that boat,
> and I've given up checking to see if it is still the case.

I know what you mean about being tarred with a brush.  That is why I
used the term "good" RBL service.  I know of at least one RBL service
that blacklists on a country basis.  For those persons/companies
subscribing to that server my emails are blocked since I happen to live
in one of the "bad" countries.

FWIW, I'm not a fan of RBL services and while many of them exist I've
not seen any data as to how widely used they are.

You are only young once, but you can stay immature indefinitely. 葛斯克
愛德華 / 台北市八德路四段

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