Date: Mon, 8 Aug 2016 08:53:58 +0100 From: Matthew Seaman <matthew@FreeBSD.org> To: freebsd-questions@freebsd.org Subject: Re: Need advice for setting up mail server Message-ID: <2c14614d-5f7a-9f5d-da79-d68372ab824d@FreeBSD.org> In-Reply-To: <20160807181230.GD12411@len-t420.klaas> References: <VI1PR02MB0974A0FB1361638BDD437043F61A0@VI1PR02MB0974.eurprd02.prod.outlook.com> <2394887a809b4ad8e702d1d13bb1337c@mail.zplay.eu> <20160807180149.GC12411@len-t420.klaas> <20160807181230.GD12411@len-t420.klaas>
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This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --53fERks7kUr1hNWwaMlL2XNS5WbsjQWxk Content-Type: multipart/mixed; boundary="9dl7al6Ww6ROC8IVedpknuUg3NfeR5oVS" From: Matthew Seaman <matthew@FreeBSD.org> To: freebsd-questions@freebsd.org Message-ID: <2c14614d-5f7a-9f5d-da79-d68372ab824d@FreeBSD.org> Subject: Re: Need advice for setting up mail server References: <VI1PR02MB0974A0FB1361638BDD437043F61A0@VI1PR02MB0974.eurprd02.prod.outlook.com> <2394887a809b4ad8e702d1d13bb1337c@mail.zplay.eu> <20160807180149.GC12411@len-t420.klaas> <20160807181230.GD12411@len-t420.klaas> In-Reply-To: <20160807181230.GD12411@len-t420.klaas> --9dl7al6Ww6ROC8IVedpknuUg3NfeR5oVS Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable On 07/08/2016 19:12, Niklaas Baudet von Gersdorff wrote: > I forgot to mention postscreen(8). For its functionality see >=20 > http://www.postfix.org/POSTSCREEN_README.html >=20 > I just learned about it some weeks ago, so I haven't tested it > yet. Anyway, I guess it's a cleverer and less resource hungry > solution than other anti-spam tool. postscreen is cool. It's a single fairly small process that handles the initial connection for inbound mail and it runs a number of fast and cheap anti-spam measures, like verifying the forward and reverse lookups of the EHLO name and remote IP number in the TCP connection. Once the incoming connection as passed this pre-screen, it gets handed of to the normal postfix smtpd process for processing: it's only at this stage that you'ld run heuristic anti-spam rules that do detailed analysis of message content. Cheers, Matthew --9dl7al6Ww6ROC8IVedpknuUg3NfeR5oVS-- --53fERks7kUr1hNWwaMlL2XNS5WbsjQWxk Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQJ8BAEBCgBmBQJXqDqWXxSAAAAAAC4AKGlzc3Vlci1mcHJAbm90YXRpb25zLm9w ZW5wZ3AuZmlmdGhob3JzZW1hbi5uZXQ2NTNBNjhCOTEzQTRFNkNGM0UxRTEzMjZC QjIzQUY1MThFMUE0MDEzAAoJELsjr1GOGkATA6EP/1v3Y3PM+UAiEqxIVhX6YpMA l0PpRcwcwY427F4HmLHjSMc7JIPuqiIPvJcmGOX1AWadz6e8uVpudoY0heY7taHa ZLeVtHpySQO4mbb2GcqISvwC/cbppCRGHwyoXHVv9Px1li6fCqGB6J0Jo/PEcy72 4SHNtmFowJe0UjQXW9xzeKFkkBkgz63Bmvg8BcSDgMTQfo9VCEFlUMDoBAn+S3Kn pbFpvHqKmYUppyD2DOLT204PvpZgv60zBeLsPLsOc63ypN2BF7a1+hbqSDn+MCpN zKniR61pVP6gX7Gox24g7vrUgNM5KoH1tC2IzmZGPvHhR/vvMQSERN9hpgOwoTB4 WsA6r8N/Xv3T54GKL3rgI23yhMfXP6MsqDQ81i6sRcLaRcATK//1NF9DF49K2pBQ 6GeRkAW9H+Zn/ElaAeVbWyqnIEykKcT8dqZvWCdaaThDP7a69z3T28CenjY6j92C ERqEWJYXNyHMQqp8/Ytlf8OtS9N/ErstZVBPDhYjYP9zU47pZ5yEs3KS+LkZfIyF j+QkuDJ305MBP97DlD8lUFcBNq9QndYLfnidm2EENvKp8Hk8IqhNJ0xuM4rr/d+N cN+bsANNC9dqhBREsMwwIjOC+4Z6bG94o5Q6fAxHyUX+A0QJQ9j+CMJQYNLRt5HG OC3YCEMIIS93e0h+vl4j =g2d4 -----END PGP SIGNATURE----- --53fERks7kUr1hNWwaMlL2XNS5WbsjQWxk--
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