Gentoo Archives: gentoo-user

From: Marco Rebhan <me@××××××××.net>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Handling a sizable amount of spam and Dovecote question
Date: Thu, 20 Jan 2022 14:07:03
Message-Id: 7358396.EvYhyI6sBW@invader
In Reply to: [gentoo-user] Handling a sizable amount of spam and Dovecote question by Dale
1 On Thursday, 20 January 2022 14:22:02 CET Dale wrote:
2 > What do others do with spam to minimize it?
4 Hi Dale,
6 I'm not sure if you're talking about self-hosted mail because you
7 mention dovecot, if you do:
9 I use postfix's smtp_recipient_restrictions to block mail coming from
10 servers marked as spam by RBLs:
12 smtpd_recipient_restrictions =
13 reject_rbl_client,
14 reject_rbl_client
16 I'm not sure if this is doable through Dovecot configuration, but
17 without an MTA like Postfix you can't receive mail anyway. This alone
18 seems to block most of the spam I get. And additionally I have rspamd
19 and some filters set up because some stuff does get through. I think
20 Postfix also lets you block IP ranges directly in case you get spammed
21 by some network that isn't listed on spamhaus but I haven't needed that
22 yet.
24 > I'm considering setting
25 > up another email address and switching then closing current account.
26 > Yea, it's that annoying. Is there someone I can report them too? Is
27 > there something I'm not recognizing in the message headers that I can
28 > use to report them too?
30 In case you're using some other email provider (is this about your Gmail
31 address?), what you can do regardless is set up filters (ideally server-
32 side if they provide the capability...) filtering mails by e.g. From
33 header (I have a whole list of those), and if they have a well
34 configured spam filter you should be able to move the spam mail into
35 your spam folder and it should eventually start to classify similar mail
36 as spam automatically. (but this is specific to the service so I can't
37 tell you a way that works everywhere)
39 > By the way, I have dovecote set up and the service seems to start.
40 > What do I do after getting the service to start to set up where to
41 > get email etc?
43 If you aren't self-hosting your mail but want to (be warned, it's a fair
44 bit of setup connecting it all together), you first need a domain, a
45 server with a static IP address (don't use some box in your home) that
46 has the correct rDNS record set in addition to DNS, so the hostname can
47 be resolved from its public IP. To actually be able to receive mail, you
48 also need an MTA. Dovecot is just a way to access a mailbox, it doesn't
49 actually handle receiving mail from other servers or sending mail.
50 Postfix is what I use for that, they work well together. I followed
51 these wiki articles among some others I can't find right now to set it
52 up initially:
57 I hope this helps!
59 -Marco


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Subject Author
Re: [gentoo-user] Handling a sizable amount of spam and Dovecote question William Kenworthy <billk@×××××××××.au>
Re: [gentoo-user] Handling a sizable amount of spam and Dovecote question Dale <rdalek1967@×××××.com>
RE: [gentoo-user] Handling a sizable amount of spam and Dovecote question Laurence Perkins <lperkins@×××××××.net>