[HCoop-Help] Spam bounces

Adam Megacz megacz at hcoop.net
Sat May 17 13:33:39 EDT 2008

Jeremy Penner <jeremy at sporktania.com> writes:
> ... Well, at least 1,500 of those addresses thus far don't exist, or
> are hosted by servers that send obnoxious "your email has been
> blocked by our spam filter" messages.  I'm drowning in bounce
> messages.... Anyone on this list dealt with a similar problem?

Yes.  You can block 100% of this sort of backscatter with no false
positives by using Signed VERP:


I use it and it works wonderfully.

  - a

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