From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by finch.gentoo.org (Postfix) with ESMTPS id 8DEFD138206 for ; Fri, 19 Jan 2018 18:57:23 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 25D27E09B1; Fri, 19 Jan 2018 18:57:17 +0000 (UTC) Received: from tncsrv06.tnetconsulting.net (tncsrv06.tnetconsulting.net [IPv6:2600:3c00::f03c:91ff:fe26:8849]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id AA630E0972 for ; Fri, 19 Jan 2018 18:57:16 +0000 (UTC) Received: from REDACTED ([IPv6:2620:0:102a:11:29cd:bb8f:2a8f:6c70]) (authenticated bits=0) by tncsrv06.tnetconsulting.net (8.15.2/8.15.2/Debian-3) with ESMTPSA id w0JIvEM9004818 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NO) for ; Fri, 19 Jan 2018 12:57:15 -0600 ARC-Filter: OpenARC Filter v0.1.0 tncsrv06.tnetconsulting.net w0JIvEM9004818 Authentication-Results: tncsrv06.tnetconsulting.net; arc=none header.d=tnetconsulting.net ARC-Seal: i=1; a=rsa-sha256; d=tnetconsulting.net; s=2015; t=1516388235; cv=none; b=bsYrCrLw8LVZZ0svqQ/JXCUBkCBGJAplqLrmAyv9UD9iXaRegspsauGxXy8BsXvc8XgYKGQx2tdAK7xwyVIOFfcBoFKTsk15dpv7H6IpHHbyfZtsvrPFag78SCT7ET1I+vi889jbOT0rRRm01fZndKeGTW+zxn+l9vnwZotYqoI= ARC-Message-Signature: i=1; a=rsa-sha256; d=tnetconsulting.net; s=2015; t=1516388235; c=relaxed/simple; bh=AU1wEZMsghiNMat8or5p2trzV4MU8XkeeAnu8na0RuA=; h=DKIM-Signature:Subject:To:From:Message-ID:Date:User-Agent: MIME-Version:Content-Type; b=UmUlUmimzUUByMep72YUOitemWnZdz0AHQcV4AzqbG6C0gSgO2Q9qAdtLBQRLINiFcSuz/UQDvxE9+8wrUZZGOO9nXnVlZJBDF2RaX1ttpTqCK1d16PK+AlxZsqwlX0ncEkL0jBH/yOIOL423g3g6HVF3rpmSZdReZvkX8ATmDA= ARC-Authentication-Results: i=1; tncsrv06.tnetconsulting.net; none DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=tnetconsulting.net; s=2015; t=1516388235; bh=AU1wEZMsghiNMat8or5p2trzV4MU8XkeeAnu8na0RuA=; h=Subject:To:References:From:Message-ID:Date:User-Agent: MIME-Version:In-Reply-To:Content-Type:Cc:Content-Disposition: Content-Language:Content-Transfer-Encoding:Content-Type:Date:From: In-Reply-To:Message-ID:MIME-Version:References:Reply-To: Resent-Date:Resent-From:Resent-To:Resent-Cc:Sender:Subject:To: User-Agent; b=EcKhevhyKQ4SSnE7fkVTfSsk19DwQwB65fxf89PvwPcOIe3LayzztqAGlrta76rzc 6mXj88t2azl20TK/wBphePt75lMiPNHR6JvxS1MnHPjTM5oUm2KHCvBt2JCu4fmsCY 95Hkxs5ZtD5WOjLkZ+XnKAa0zvq82Hv5/auJ+mQQ= Subject: Re: [gentoo-user] Re: Simple SMTP to cmd-line MTA relay? To: gentoo-user@lists.gentoo.org References: From: Grant Taylor Organization: TNet Consulting Message-ID: Date: Fri, 19 Jan 2018 11:57:14 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.5.0 Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="------------ms010908070207080200020705" X-Archives-Salt: bfdaf7dd-c074-4994-bfe0-586477628743 X-Archives-Hash: 29c8d266e1bc33bc5810c0238e50b9c0 This is a cryptographically signed message in MIME format. --------------ms010908070207080200020705 Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 01/19/2018 11:38 AM, Grant Edwards wrote: > I have a /usr/bin/sendmail emulator that transfers mail to an MTA that = > will then worry about delivery. I need an SMTP server that will relay = > incoming mail by using that existing command-line utility. =E2=80=A6 > I need something that accepts mail via SMTP (with SSL and AUTH support)= ,=20 > and then relays each received message by invoking a command line utilty= =20 > that has the same API as /usr/bin/sendmail. You want (what Sendmail calls) a custom mailer. > There is no local delivery and no acceptance of mail other than via SMT= P. That's probably mostly immaterial. Aside from the fact that you would=20 not add those features if you were write a custom SMTP gateway. Most=20 MTAs will have that, but it can be ignored. > I would very much prefer that there is no queueing: the smtp server=20 > should not acknowlege acceptance of the message until the smtp server=20 > has invoked /usr/bin/sendmail and it has returned success. That's possible. But it does add some additional constraints. It also=20 means that traditional MTAs likely won't operate the way that you want=20 this to. Have you tried putting ssltunnel (or the likes) in front of your=20 existing SMTP server to see if it (they) can handle STARTTLS for you? - = Is it possible to augment your existing solution without needing to=20 replace it? Also, this sounds use case specific enough that I would consider going=20 back to the person maintaining the scrip SMTP server that you're=20 currently using and try to fix it. --=20 Grant. . . . unix || die --------------ms010908070207080200020705 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgEFADCABgkqhkiG9w0BBwEAAKCC CxcwggUpMIIEEaADAgECAhAIzwdZriPvq7FXSbc0jGReMA0GCSqGSIb3DQEBCwUAMIGXMQsw CQYDVQQGEwJHQjEbMBkGA1UECBMSR3JlYXRlciBNYW5jaGVzdGVyMRAwDgYDVQQHEwdTYWxm b3JkMRowGAYDVQQKExFDT01PRE8gQ0EgTGltaXRlZDE9MDsGA1UEAxM0Q09NT0RPIFJTQSBD bGllbnQgQXV0aGVudGljYXRpb24gYW5kIFNlY3VyZSBFbWFpbCBDQTAeFw0xNzExMTcwMDAw MDBaFw0xODExMTcyMzU5NTlaMCsxKTAnBgkqhkiG9w0BCQEWGmd0YXlsb3JAdG5ldGNvbnN1 bHRpbmcubmV0MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvhfMhFM6CDAWL4Mg 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