From owner-freebsd-questions@FreeBSD.ORG Mon Oct 5 17:49:54 2009 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 67E62106568D for ; Mon, 5 Oct 2009 17:49:54 +0000 (UTC) (envelope-from jon@radel.com) Received: from wave.radel.com (wave.radel.com [216.143.151.4]) by mx1.freebsd.org (Postfix) with ESMTP id 18B308FC17 for ; Mon, 5 Oct 2009 17:49:53 +0000 (UTC) Received: by wave.radel.com (CommuniGate Pro PIPE 4.1.6) with PIPE id 9046404; Mon, 05 Oct 2009 13:49:52 -0400 Received: from [192.168.43.221] (account jon@radel.com HELO braeburn.local) by wave.radel.com (CommuniGate Pro SMTP 4.1.6) with ESMTP-TLS id 9046401; Mon, 05 Oct 2009 13:49:38 -0400 Message-ID: <4ACA31E6.4050603@radel.com> Date: Mon, 05 Oct 2009 13:50:30 -0400 From: Jon Radel User-Agent: Thunderbird 2.0.0.19 (Macintosh/20081209) MIME-Version: 1.0 To: Gary Kline References: <20091005173717.GA44563@thought.org> In-Reply-To: <20091005173717.GA44563@thought.org> Content-Type: multipart/signed; protocol="application/x-pkcs7-signature"; micalg=sha1; boundary="------------ms060800080109080509090103" X-Radel.com-MailScanner-Information: Please contact Jon for more information X-Radel.com-MailScanner: Found to be clean X-Mailer: CommuniGate Pro CLI mailer Cc: FreeBSD Mailing List Subject: Re: way to check an email without sending it?? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 05 Oct 2009 17:49:54 -0000 This is a cryptographically signed message in MIME format. --------------ms060800080109080509090103 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Gary Kline wrote: > > Hey Guys, ^^^^ Seen as a sexist assumption by some, but some consider gals to be guys. > > Is there a way I can tell that an email address, say > > joe@foo.com > > is still valid without joe knowing that I am curious? --And, > yes, this isn't a FBSD-specific question... . Depends heavily on how foo.com does things. Used to be, and still is some places, easy to tell by doing a raw SMTP connection and seeing what the receiving server did when you provided the destination address. That makes it real easy to harvest addresses by brute force, so these days many servers don't give you a hint unless you actually send some mail. Some don't even give you a hint then, simply black holing the mail if the address is incorrect. -- --Jon Radel jon@radel.com --------------ms060800080109080509090103 Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIJMTCC AvMwggJcoAMCAQICEB1eDeVYxhAO39zOEnHiAbwwDQYJKoZIhvcNAQEFBQAwYjELMAkGA1UE BhMCWkExJTAjBgNVBAoTHFRoYXd0ZSBDb25zdWx0aW5nIChQdHkpIEx0ZC4xLDAqBgNVBAMT I1RoYXd0ZSBQZXJzb25hbCBGcmVlbWFpbCBJc3N1aW5nIENBMB4XDTA5MDIyNTA0MTMyNloX DTEwMDIyNTA0MTMyNlowXjEOMAwGA1UEBBMFUmFkZWwxEzARBgNVBCoTCkpvbiBUaG9tYXMx GTAXBgNVBAMTEEpvbiBUaG9tYXMgUmFkZWwxHDAaBgkqhkiG9w0BCQEWDWpvbkByYWRlbC5j b20wggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQDeT7qtj+euqWr2wXM7OnwrXJe9 Jlc0CGaM69AcTWOFakRY7MUXrqcmF5WjrqrMoagfGjS362eb6787x313ZdLoGuQPh/o2Mqp4 BbSgcnGZRj82SxkUmSN6+2q5ZOOYA6JmfvJwmBuRQ8sHki4GnoSwbIc11a70/z4at5qRi8bb /RtmJYewnpwXErfuuq0hhVSsYKFPXELzSahlpyC+lUfIdgvLJGxc7eU5QuvtYmuohNjn4k9C SJinvfjFbkvgbIgtvZxxmcE74NsKTeW2bEwgoCjZlcAD/QMgLE9KGSVn4/LzC/OZwkPKcWKO CPTNIZK1P+HxaIW4BvvYtjLu2Qx5AgMBAAGjKjAoMBgGA1UdEQQRMA+BDWpvbkByYWRlbC5j b20wDAYDVR0TAQH/BAIwADANBgkqhkiG9w0BAQUFAAOBgQBT+qFXV8sexrNOJuK8rhVpnCNF iFslD9Kelhon5Tt1tlTsw+B9F9B8ys9tfV559tzVqE+ULcqnjX2rsaJCwFmn6gyucCN0yGML h1O4ddsNQmoTOILyBCv/rkfO4tbXJM3si2JDNPZnL/0Rf3FpDTc3U3SnAdqE1a/8PGBTTmay VDCCAvMwggJcoAMCAQICEB1eDeVYxhAO39zOEnHiAbwwDQYJKoZIhvcNAQEFBQAwYjELMAkG A1UEBhMCWkExJTAjBgNVBAoTHFRoYXd0ZSBDb25zdWx0aW5nIChQdHkpIEx0ZC4xLDAqBgNV BAMTI1RoYXd0ZSBQZXJzb25hbCBGcmVlbWFpbCBJc3N1aW5nIENBMB4XDTA5MDIyNTA0MTMy NloXDTEwMDIyNTA0MTMyNlowXjEOMAwGA1UEBBMFUmFkZWwxEzARBgNVBCoTCkpvbiBUaG9t YXMxGTAXBgNVBAMTEEpvbiBUaG9tYXMgUmFkZWwxHDAaBgkqhkiG9w0BCQEWDWpvbkByYWRl bC5jb20wggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQDeT7qtj+euqWr2wXM7Onwr XJe9Jlc0CGaM69AcTWOFakRY7MUXrqcmF5WjrqrMoagfGjS362eb6787x313ZdLoGuQPh/o2 Mqp4BbSgcnGZRj82SxkUmSN6+2q5ZOOYA6JmfvJwmBuRQ8sHki4GnoSwbIc11a70/z4at5qR i8bb/RtmJYewnpwXErfuuq0hhVSsYKFPXELzSahlpyC+lUfIdgvLJGxc7eU5QuvtYmuohNjn 4k9CSJinvfjFbkvgbIgtvZxxmcE74NsKTeW2bEwgoCjZlcAD/QMgLE9KGSVn4/LzC/OZwkPK cWKOCPTNIZK1P+HxaIW4BvvYtjLu2Qx5AgMBAAGjKjAoMBgGA1UdEQQRMA+BDWpvbkByYWRl bC5jb20wDAYDVR0TAQH/BAIwADANBgkqhkiG9w0BAQUFAAOBgQBT+qFXV8sexrNOJuK8rhVp nCNFiFslD9Kelhon5Tt1tlTsw+B9F9B8ys9tfV559tzVqE+ULcqnjX2rsaJCwFmn6gyucCN0 yGMLh1O4ddsNQmoTOILyBCv/rkfO4tbXJM3si2JDNPZnL/0Rf3FpDTc3U3SnAdqE1a/8PGBT TmayVDCCAz8wggKooAMCAQICAQ0wDQYJKoZIhvcNAQEFBQAwgdExCzAJBgNVBAYTAlpBMRUw EwYDVQQIEwxXZXN0ZXJuIENhcGUxEjAQBgNVBAcTCUNhcGUgVG93bjEaMBgGA1UEChMRVGhh d3RlIENvbnN1bHRpbmcxKDAmBgNVBAsTH0NlcnRpZmljYXRpb24gU2VydmljZXMgRGl2aXNp b24xJDAiBgNVBAMTG1RoYXd0ZSBQZXJzb25hbCBGcmVlbWFpbCBDQTErMCkGCSqGSIb3DQEJ ARYccGVyc29uYWwtZnJlZW1haWxAdGhhd3RlLmNvbTAeFw0wMzA3MTcwMDAwMDBaFw0xMzA3 MTYyMzU5NTlaMGIxCzAJBgNVBAYTAlpBMSUwIwYDVQQKExxUaGF3dGUgQ29uc3VsdGluZyAo UHR5KSBMdGQuMSwwKgYDVQQDEyNUaGF3dGUgUGVyc29uYWwgRnJlZW1haWwgSXNzdWluZyBD QTCBnzANBgkqhkiG9w0BAQEFAAOBjQAwgYkCgYEAxKY8VXNV+065yplaHmjAdQRwnd/p/6Me 7L3N9VvyGna9fww6YfK/Uc4B1OVQCjDXAmNaLIkVcI7dyfArhVqqP3FWy688Cwfn8R+RNiQq E88r1fOCdz0Dviv+uxg+B79AgAJk16emu59l0cUqVIUPSAR/p7bRPGEEQB5kGXJgt/sCAwEA AaOBlDCBkTASBgNVHRMBAf8ECDAGAQH/AgEAMEMGA1UdHwQ8MDowOKA2oDSGMmh0dHA6Ly9j cmwudGhhd3RlLmNvbS9UaGF3dGVQZXJzb25hbEZyZWVtYWlsQ0EuY3JsMAsGA1UdDwQEAwIB BjApBgNVHREEIjAgpB4wHDEaMBgGA1UEAxMRUHJpdmF0ZUxhYmVsMi0xMzgwDQYJKoZIhvcN AQEFBQADgYEASIzRUIPqCy7MDaNmrGcPf6+svsIXoUOWlJ1/TCG4+DYfqi2fNi/A9BxQIJNw PP2t4WFiw9k6GX6EsZkbAMUaC4J0niVQlGLH2ydxVyWN3amcOY6MIE9lX5Xa9/eH1sYITq72 6jTlEBpbNU1341YheILcIRk13iSx0x1G/11fZU8xggNkMIIDYAIBATB2MGIxCzAJBgNVBAYT AlpBMSUwIwYDVQQKExxUaGF3dGUgQ29uc3VsdGluZyAoUHR5KSBMdGQuMSwwKgYDVQQDEyNU aGF3dGUgUGVyc29uYWwgRnJlZW1haWwgSXNzdWluZyBDQQIQHV4N5VjGEA7f3M4SceIBvDAJ BgUrDgMCGgUAoIIBwzAYBgkqhkiG9w0BCQMxCwYJKoZIhvcNAQcBMBwGCSqGSIb3DQEJBTEP Fw0wOTEwMDUxNzUwMzBaMCMGCSqGSIb3DQEJBDEWBBQfXDpnQ4mCYf4smJtCYEe4gh2z+zBS BgkqhkiG9w0BCQ8xRTBDMAoGCCqGSIb3DQMHMA4GCCqGSIb3DQMCAgIAgDANBggqhkiG9w0D AgIBQDAHBgUrDgMCBzANBggqhkiG9w0DAgIBKDCBhQYJKwYBBAGCNxAEMXgwdjBiMQswCQYD VQQGEwJaQTElMCMGA1UEChMcVGhhd3RlIENvbnN1bHRpbmcgKFB0eSkgTHRkLjEsMCoGA1UE AxMjVGhhd3RlIFBlcnNvbmFsIEZyZWVtYWlsIElzc3VpbmcgQ0ECEB1eDeVYxhAO39zOEnHi AbwwgYcGCyqGSIb3DQEJEAILMXigdjBiMQswCQYDVQQGEwJaQTElMCMGA1UEChMcVGhhd3Rl IENvbnN1bHRpbmcgKFB0eSkgTHRkLjEsMCoGA1UEAxMjVGhhd3RlIFBlcnNvbmFsIEZyZWVt YWlsIElzc3VpbmcgQ0ECEB1eDeVYxhAO39zOEnHiAbwwDQYJKoZIhvcNAQEBBQAEggEAsD8C MTKCdRzW6cXAUE2yKLTJaAxZMagjyBl+rts2/0IS7BQuGxhtaGHObfnHVQ4qG/c0twtUAQT8 rzpRLrQ6Q/VSuLk7wsrcNUUc0yfEhiTw7GvPE1Q+IHgwgc7kYt42glgQNTCJvKlfxBlQQeBl iHtkEuOedb/Nuqkr/HbMtacunRGvSCYj8NiaAt3FN37AHdGDwc4D2ht8oPTIeFCYn+KNOK79 6xIEGToXqxp+iLPv6bUJwPxvf5GoZS5EMEOZ/faCxzkNtSpmWK3Xc7p9obaDs9aspNNkBaIl PAZZCzhJbQM6Cae5VmpyP0JkdS3A3SRqt7XD/kp4Cx8fAqxNQgAAAAAAAA== --------------ms060800080109080509090103--