Re: [courier-users] How to fight spam bounces?

On Mon, Apr 28, 2008 at 5:08 PM, Jani Ollikainen
<jani.ollikainen@pronetko.fi> wrote:
> Hi,
>
> Subject pretty much says it all. How to fight against
> spammers who have used my users email address / alias for
> sending email.
>
> Then the bounces begin to arrive.. Most of them
> will come in regular smtp-servers which aren't in any
> blocklists so no help from blocklists.
>
> What can be done to them?

Unsolicited bounces are spam. Report them to spamcop and the
respecitve admins will get notificatin that they've been reported for
spamming due to sending unsolicited bounces. Some will act and upgrade
their email systems.

> The only solution that came to my mind is to temporarily
> block bounces for email account / alias account when
> it's receiving spam bounces. It's not a good one, and
> valid bounces go unnoticed. But i think my users could
> live with it. Rather than seeing many kilos of bounces
> from emails that they didn't send.

Got SPF records?

Lisa.

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