Sorry for posting as a non-developer,

we store an md5-hash in a unique key which does the trick.

Tobias
"Sander Roobol" <[EMAIL PROTECTED]> schrieb im Newsbeitrag
003201c158a8$9096da80$01e3a8c0@grotepc">news:003201c158a8$9096da80$01e3a8c0@grotepc...
> > Actually it is just a note next to the submit button. But it should do
> > the job.
> Can't you check for duplicate messages? Construct a query which checks if
> there's already a row with that e-mail adres, subject, etc... that should
> really do it...
>
> Sander
>



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