Subj : ET phone home
To   : Nick Andre
From : mark lewis
Date : Sun Jan 08 2017 09:16 am


 On 2017 Jan 07 22:39:20, you wrote to me:

 NA> If you're referring to Fido-Web, none of that has impacted my system,
 NA> in both directions, as I have links that use my system as a "backup"
 NA> feed for certain echoes. Lots of folks from both Zone 1 and 2...

 NA> I see the duplicates being logged; but they just get zapped.

 NA> Its a non-issue here...

apparently you're not getting the modified duplicates... the ones with the time 
stamps changed to :00 or to even seconds... then there are the ones that have 
had the body modified... i've seen MSGIDs with a trailing space added to 
them... that leads to MSGID checking only systems to fail the detection unless 
they specifically trim whitespace... rewrapping of the body is another flaw 
causing dupes to not be detected properly...

one of my comments was about nothing in fidonet being able to detect these 
types of modified messages because they have been modified in ways no one 
thought they would ever be modified...

IIRC, db uses the header and first 40 bytes for its dupe detection... i'm not 
exactly sure on the details but i know that they greatly influenced me to have 
my software place the MSGID as close to the beginning of the control lines as 
possible so that db would not detect messages posted within one second as 
dupes... this was especially important when testing at 100+ posts per second... 
are you willing to share information about how db does its dupe detection so 
others can understand more? please?

)\/(ark

Always Mount a Scratch Monkey
Do you manage your own servers? If you are not running an IDS/IPS yer doin' it 
wrong...
.... Nudists are people who wear one-button shirts.
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