Mailing List Archive: Block spam at smtp time, but then still forward to users spam box

Block spam at smtp time, but then still forward to users spam box

May 20, 2019, 12:41 AM

Post #1 of 3 (314 views)

Good day Guys

Just want to check with the community.

My colleague has proposed that at smtp time, if a mail is deemed as
spam, the server issues a reject code, but then to too accept the mail
and forward the mail the user for incase its a false positive.

His logic is that, that the spammer does not build up a database.

Currently what we do is, if the score is between 5 and 15, just accept
and move the spam to the users SPAM box. Above 15 we out right block.

I am on the fence on this one, hence the reason to pick the communities
brain.

If anyone can share any thoughts or concerns, please can you share.

Many thanks
Brent

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Re: Block spam at smtp time, but then still forward to users spam box [ In reply to ]

exim-users at exim

May 20, 2019, 1:34 AM

Post #2 of 3 (314 views)

Permalink

Am 20.05.19 um 09:41 schrieb Brent Clark via Exim-users:
> Good day Guys
>
> Just want to check with the community.
>
> My colleague has proposed that at smtp time, if a mail is deemed as
> spam, the server issues a reject code, but then to too accept the mail
> and forward the mail the user for incase its a false positive.
>
> His logic is that, that the spammer does not build up a database.

Wenn a spammer sends you spams, he already has you in a database.

There are billions of email addresses on lists in the dark corners of
the web ;)

Best regards,
Marius

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Re: Block spam at smtp time, but then still forward to users spam box [ In reply to ]

exim-users at exim

May 20, 2019, 2:04 AM

Post #3 of 3 (314 views)

Permalink

On Mon, 20 May 2019, Brent Clark via Exim-users wrote:

> Good day Guys
>
> Just want to check with the community.
>
> My colleague has proposed that at smtp time, if a mail is deemed as spam, the
> server issues a reject code, but then to too accept the mail and forward the
> mail the user for incase its a false positive.

If the spammer retries the user will end up with multiple copies,
possibly dozens, hundreds or even thousands.

> His logic is that, that the spammer does not build up a database.

I've heard that some spammers record which addresses work,
so there could be some advantage in rejecting the mail, but that is
heresay.

A beter place form such discussions might be the mailop list:
https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
there seems to be an open archive at
https://www.mail-archive.com/mailop@mailop.org/info.html

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Andrew C. Aitchison Cambridge, UK
andrew@aitchison.me.uk

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