Re: [exim] anti-spam pointers please

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Author: Rory Campbell-Lange
Date:  
To: Odhiambo Washington
CC: exim users
Subject: Re: [exim] anti-spam pointers please
On 02/04/19, Odhiambo Washington via Exim-users (exim-users@???) wrote:
> On Mon, 1 Apr 2019 at 22:12, Rory Campbell-Lange via Exim-users <
> exim-users@???> wrote:
>
> > It's some years since I've spent time tweaking my exim setup to receive
> > spam. I've forgotten any skills I might once have had in this area.


> Hello Rory,
>
> Long time!
>
> Lately, you can also substitute rspamd for SpamAssassin.
> I hope you are also doing rDNS checks. They help me block many spammers too.


Hi Odhiambo. Lovely to receive an email from you after all these years!

I've spent some time looking at the rspamd website following your
mention of it. I'll turn to that if I can't improve my spamassassin
performance!

For RDNS do you recommend something along the lines of

    drop    message     = REJECTED - Sender Verify Failed and no RDNS
            log_message = REJECTED - Sender Verify Failed and no RDNS
            !verify = reverse_host_lookup
            !verify = sender/callout=2m,defer_ok
            !condition =  ${if eq{$sender_verify_failure}{}}


(reference https://github.com/Exim/exim/wiki/Verification)

Kind regards
Rory