Re: Blocking form spam

This WebDNA talk-list message is from

2006


It keeps the original formatting.
numero = 67910
interpreted = N
texte = Use grep. Stuart Tremain idfk web developments, sydney, australia On 09 Aug 2006, at 10:08 AM, Tom Duke wrote: > Hi, > > A couple of my sites are starting to get hit by bots that are sending > spam through contact and sign-up forms. I can't use CAPTCHAS on > some of > these forms and was wondering what techniques others are using to try > and block this stuff. > > Also on some forms the spammers are adding email headers hoping to > push > email through if any of the form fields are passed on to sendmail. I > have read that the way to block this is to strip linefeed and carraige > return characters out of the fields. The best that I have come up > with > is:- > > [table name=removelinefeeds&fields=from,to] > %0A > %0D > [/table] > > [text]_cleanname=[convertwords > table=removelinefeeds][_name][/convertwords][/text] > > Does anyone have a neater way to strip these characters ? > > > Thanks > - Tom > > ------------------------------------------------------------- > This message is sent to you because you are subscribed to > the mailing list . > To unsubscribe, E-mail to: > To switch to the DIGEST mode, E-mail to digest@talk.smithmicro.com> > Web Archive of this list is at: http://webdna.smithmicro.com/ ------------------------------------------------------------- This message is sent to you because you are subscribed to the mailing list . To unsubscribe, E-mail to: To switch to the DIGEST mode, E-mail to Web Archive of this list is at: http://webdna.smithmicro.com/ Associated Messages, from the most recent to the oldest:

    
  1. Re: Blocking form spam ( Stuart Tremain 2006)
  2. Re: Blocking form spam ( Terry Wilson 2006)
  3. Re: Blocking form spam ( Stuart Tremain 2006)
  4. Re: Blocking form spam ( "Tom Duke" 2006)
  5. Re: Blocking form spam ( Stuart Tremain 2006)
  6. Re: Blocking form spam ( WJ Starck 2006)
  7. Re: Blocking form spam ( Gary Krockover 2006)
  8. Re: Blocking form spam ( Donovan Brooke 2006)
  9. Re: Blocking form spam ( "Brian B. Burton" 2006)
  10. Re: Blocking form spam ( WJ Starck 2006)
  11. Re: Blocking form spam ( Terry Wilson 2006)
  12. Re: Blocking form spam ( Stuart Tremain 2006)
  13. Blocking form spam ( "Tom Duke" 2006)
Use grep. Stuart Tremain idfk web developments, sydney, australia On 09 Aug 2006, at 10:08 AM, Tom Duke wrote: > Hi, > > A couple of my sites are starting to get hit by bots that are sending > spam through contact and sign-up forms. I can't use CAPTCHAS on > some of > these forms and was wondering what techniques others are using to try > and block this stuff. > > Also on some forms the spammers are adding email headers hoping to > push > email through if any of the form fields are passed on to sendmail. I > have read that the way to block this is to strip linefeed and carraige > return characters out of the fields. The best that I have come up > with > is:- > > [table name=removelinefeeds&fields=from,to] > %0A > %0D > [/table] > > [text]_cleanname=[convertwords > table=removelinefeeds][_name][/convertwords][/text] > > Does anyone have a neater way to strip these characters ? > > > Thanks > - Tom > > ------------------------------------------------------------- > This message is sent to you because you are subscribed to > the mailing list . > To unsubscribe, E-mail to: > To switch to the DIGEST mode, E-mail to digest@talk.smithmicro.com> > Web Archive of this list is at: http://webdna.smithmicro.com/ ------------------------------------------------------------- This message is sent to you because you are subscribed to the mailing list . To unsubscribe, E-mail to: To switch to the DIGEST mode, E-mail to Web Archive of this list is at: http://webdna.smithmicro.com/ Stuart Tremain

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