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echo: fmail_help
to: Wilfred van Velzen
from: mark lewis
date: 2016-11-20 11:02:12
subject: Fmail, HPT and FastEcho

20 Nov 16 13:03, you wrote to Paul Hayton:

 PH>> It's not the code I want to compare rather the way the end product
 PH>> operates and what it does / does not do/support etc.

 WV> Than you will have to depend on the docs and experience. But that
 WV> probably won't tell you the exact details of the dupe checking
 WV> algorithme for instance.

i remember, when i was working on some of my message tools, that i
discovered one particular tosser read the header plus another 40 bytes or
so... based on that, i decided that my code should be putting the MSGID
control first (for netmail) or right after the AREA control line (for
echomail)... in this way, it was pretty much guaranteed to calculate a
different hash for each post... especially if there were a number of posts
imported into the message base within one second... of course this doesn't
do anything to alleviate false positives due to hash collisions but it
makes a best effort at putting the different information up where said
tosser can find and use it... if i had placed the MSGID lower, it is very
possible that other control lines would not contain unique data from one
message to another and that tosser would find many false positives...

there is also at least one tosser that does or did look at the message body
as well as the headers... even if the headers were different but the
message bodies were identical, it would flag them as dupes and toss them
out... messages like this are very common... examples would be echo rules
being auto-posted monthly from a text file that rarely changes...

)\/(ark

Always Mount a Scratch Monkey
Do you manage your own servers? If you are not running an IDS/IPS yer doin'
it wrong...
... All things considered, insanity may be the only reasonable alternative.
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