On Thu, 19 Jan 2006 at 10:30:35, Dilwyn Jones wrote:
(ref: <[EMAIL PROTECTED]>)
>How do these ISP spam filterings work?
>
>Do they pattern match emails (i.e. look at it, that's spam, add it to
>the list and stop every copy of that email) or simply decide that a
>particular isp seems to carry a lot of c*** and focus on those alone?
>
>I really do seem to get a lot less spam on tesco.net now, but what I
>don't know of course is how many inncoent emails are being blocked.
>Plus, as I'm on dial up, I tend to put a specific size "do not
>download" on if I'm receiving emails at peak (costly) time.
Clearly there must be lists of spam sources going the rounds.
However, of course, these sources change all the time. No spammer is
going to stay at one place for long.
I really don't know, but from observing discussions on my ISP's usenet
group, filtering by ISPs is a real problem.
I would rather take my own action, and I have a list of words that cause
a bounce. Of course the spammers use v1agra, v?agra and so on.
My filter allows regexps so v.*agra covers this one.
I also use my own filtering that my ISP offers their end. This basically
only accepts the few names (left of @) that I use. It also offers
similar regexp style filtering.
I then never see the whole host to
[EMAIL PROTECTED]
salesfirshman.co.uk
abusefirshman.co.uk
and so on.
I actually get very little spam, and most is bounced manually simply on
the basis of the subject/name. I only got one from when I went to bed to
now.
Fortunately most spammers choose really obvious names/subjects.
My main strategy though is to regularly Google for "firshman.co.uk" on
the web. I contact websites that give a hit, and get it removed.
I remember you, Dilwyn, once featured me (and all other traders).
That has proved very effective.
I certainly would not run a program like mailwiper, as this actually
sends reply emails for verification. This results in a confirmed email
address and increases spam. OK one does not see spam, but one user I
know has to wait maybe 15 minutes after boot before mailwiper finishes
scanning and leaves a usable computer!
It is also a pain for the legitimate sender.
Tony
--
QBBS (QL fido BBS 2:252/67) +44(0)1442-828255
tony@<surname>.co.uk http://firshman.co.uk
Voice: +44(0)1442-828254 Fax: +44(0)1442-828255 Skype: tonyfirshman
TF Services, 29 Longfield Road, TRING, Herts, HP23 4DG
_______________________________________________
QL-Users Mailing List
http://www.q-v-d.demon.co.uk/smsqe.htm
