\u4ee5\u524d\u3001Office365\u3068POP3\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u4f7f\u7528\u3057\u305f\u3001\u81ea\u793e\u7528\u5b89\u5426\u78ba\u8a8d\u30b7\u30b9\u30c6\u30e0\u3092\u4f5c\u6210\u3057\u305f\u306e\u3060\u304c\u3001\u4eca\u5e74\u306e10\u6708\u4ee5\u964d\u3001Office365\u306bPOP\u30a2\u30af\u30bb\u30b9\u3059\u308b\u306e\u306b\u57fa\u672c\u8a8d\u8a3c\u65b9\u5f0f\u304c\u4f7f\u3048\u306a\u304f\u306a\u308b\u3068\u306e\u30a2\u30ca\u30a6\u30f3\u30b9\u304c\u53bb\u5e74\u8fba\u308a\u304b\u3089\u3042\u308a\u3001Office365\u306eOAuth2\u306b\u3088\u308b\u8a8d\u8a3c\u3092\u8a66\u9a13\u3057\u3066\u3044\u305f\u306e\u3060\u304c\u3001\u3069\u3046\u3082\u3046\u307e\u304f\u884c\u304b\u306a\u304f\u3066\u3001\u7d50\u69cb\u60a9\u3093\u3060\u306e\u3060\u304c\u3001\u5358\u7d14\u306bSCOPE\u306e\u6307\u5b9a\u306e\u4ed5\u65b9\u3060\u3063\u305fOrz<\/p>\n\n\n\n
Office365\u7528Azure AD\u7ba1\u7406\u30dd\u30fc\u30bf\u30eb\u3067\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u767b\u9332\u3057\u3066\u3001Microsoft Graph\u3078POP.AccessAsUser.All\u30a2\u30af\u30bb\u30b9\u8a31\u53ef\u3092\u8a2d\u5b9a\u3057\u3066\u3044\u308b\u306e\u3060\u304c\u3001\u3053\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u898b\u308b\u3068\u3001<\/p>\n\n\n\n
“https:\/\/graph.microsoft.com\/POP.AccessAsUser.All”<\/p>\n\n\n\n
\u3068\u306a\u3063\u3066\u3044\u308b\u3002\u306a\u306e\u3067\u3001SCOPE\u306b\u3082\u5f53\u7136\u3053\u308c\u3092\u6307\u5b9a\u3059\u308b\u306e\u3060\u308d\u3046\u3068\u601d\u3063\u3066\u6307\u5b9a\u3057\u3066\u3044\u305f\u306e\u3060\u304c\u3001\u3053\u308c\u304c\u9593\u9055\u3044\u306e\u5143\u3002
\u30a2\u30af\u30bb\u30b9\u30c8\u30fc\u30af\u30f3\u306f\u53d6\u5f97\u3067\u304d\u308b\u306e\u3060\u304c\u3001\u8a8d\u8a3c\u6642\u306b”Authentication failed.”\u306e\u30a8\u30e9\u30fc\u304c\u51fa\u3066\u3001POP3\u30ed\u30b0\u30a4\u30f3\u306b\u5931\u6557\u3059\u308b\u30fb\u30fb\u30fb<\/p>\n\n\n\n
\u3067\u3001\u5b9f\u969b\u306b\u6307\u5b9a\u3059\u308bSCOPE\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u3057\u306a\u3051\u308c\u3070\u3044\u3051\u306a\u3044\u306e\u3067\u3042\u3063\u305f\u3002<\/p>\n\n\n\n
“https:\/\/outlook.office365.com\/POP.AccessAsUser.All”<\/p>\n\n\n\n
\u78ba\u304b\u306b\u3001\u30b5\u30f3\u30d7\u30eb\u3068\u304b\u898b\u308b\u3068\u3001\u305d\u3046\u306a\u3063\u3066\u3044\u307e\u3057\u305f\u30fb\u30fb\u30fb
\u3053\u3093\u306a\u4e8b\u3067\u7d50\u69cb\u305a\u30fc\u3063\u3068\u60a9\u3093\u3067\u305f\u3093\u3060\u3088\u306d\u30fb\u30fb\u30fb
\u3067\u3001\u81ea\u793e\u7528\u306e\u5b89\u5426\u78ba\u8a8d\u30b7\u30b9\u30c6\u30e0\u306fWindows\u30b5\u30fc\u30d3\u30b9\u3067\u52d5\u4f5c\u3055\u305b\u3066\u3044\u308b\u306e\u3067\u3001Office365\u306e\u30ed\u30b0\u30a4\u30f3\u30c0\u30a4\u30a2\u30ed\u30b0\u3092\u51fa\u3059\u4e8b\u306f\u51fa\u6765\u306a\u3044\u3002
\u305d\u3053\u3067\u3001\u3042\u307e\u308a\u304a\u85a6\u3081\u3067\u304d\u306a\u3044\u3051\u308c\u3069\u3001\u4e00\u756a\u7c21\u5358\u306a\u3001\u30e6\u30fc\u30b6\u540d\u3068\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u4f7f\u7528\u3057\u305f\u5f62\u3067\u3001\u30a2\u30af\u30bb\u30b9\u30c8\u30fc\u30af\u30f3\u3092\u53d6\u5f97\u3059\u308b\u3053\u3068\u306b\u3057\u305f\u3002
\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5f62\u3067\u30a2\u30af\u30bb\u30b9\u30c8\u30fc\u30af\u30f3\u306e\u53d6\u5f97\u304c\u53ef\u80fd\u3002<\/p>\n\n\n\n
\/\/ OAuth2\u30a2\u30af\u30bb\u30b9\u30c8\u30fc\u30af\u30f3\u53d6\u5f97\nIPublicClientApplication app = PublicClientApplicationBuilder\n .Create(ApplicationID) \/\/ \u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3(\u30af\u30e9\u30a4\u30a2\u30f3\u30c8) ID\u306e\u4e8b\n .WithAuthority(Authority) \/\/ https:\/\/login.microsoftonline.com\/ + \u30c6\u30ca\u30f3\u30c8ID\n .Build();\nstring[] scopes = new string[] { "https:\/\/outlook.office365.com\/POP.AccessAsUser.All" };\nSecureString secPass = new SecureString();\n\u30fb\u30fb\u30fb\n\/\/ \u6307\u5b9a\u3059\u308b\u306e\u306fOffice365\u306b\u30ed\u30b0\u30a4\u30f3\u306b\u4f7f\u7528\u3059\u308b\u30e6\u30fc\u30b6\u30fc\u540d\u3068\u30d1\u30b9\u30ef\u30fc\u30c9\nAuthenticationResult res = await app.AcquireTokenByUsernamePassword(scopes, Pop3User, secPass).ExecuteAsync();<\/code><\/pre><\/div>\n\n\n\n\u2191\u306e\u30b9\u30b3\u30fc\u30d7\u3092\u305a\u3063\u3068\u9593\u9055\u3048\u3066\u3044\u305f\u3093\u3060\u3088\u306d\u30fb\u30fb\u30fb\u3067\u3082\u3001\u3053\u306e\u6642\u70b9\u3067\u306f\u30a8\u30e9\u30fc\u51fa\u306a\u3044\u3093\u3060\u3088\u3002<\/p>\n\n\n\n
\u3067\u3001\u5f8c\u306fMailKit.Net.Pop3Client\u3067\u306e\u8a8d\u8a3c\u7528\u306eOAuth2\u306e\u60c5\u5831\u3092\u4f5c\u6210\u3057\u3066\u3001\u8a8d\u8a3c\u3092\u884c\u3048\u3070POP3\u3067\u3001Office365(Exchange Online)\u304b\u3089\u30e1\u30fc\u30eb\u3092\u53d6\u5f97\u3067\u304d\u308b\u3002<\/p>\n\n\n\n
\/\/ OAuth2\u7528\u306e\u8a8d\u8a3c\u6a5f\u69cb\u3092\u4f5c\u6210\nvar oauth2 = new SaslMechanismOAuth2(Pop3User, res.AccessToken);\n\nPop3Client cli = new Pop3Client();\n\/\/ POP3\u30b5\u30fc\u30d0\u30fc\u63a5\u7d9a\nawait cli.ConnectAsync(Pop3Host, Pop3Port, Pop3Security);\n\/\/ \u8a8d\u8a3c\nawait cli.AuthenticateAsync(oauth2);\nint count = await cli.GetMessageCountAsync();\nif (count != 0)\n{\n\t\/\/ POP3\u304b\u3089\u30e1\u30fc\u30eb\u306e\u53d7\u4fe1\n var msgs = await cli.GetMessagesAsync(0, count);\n foreach (var msg in msgs)\n {\n\t\t\u30fb\u30fb\u30fb<\/code><\/pre><\/div>\n\n\n\n\u3044\u3084\uff5e\u3001\u304f\u3060\u3089\u306a\u3044\u3068\u3053\u3067\u5f15\u3063\u304b\u304b\u3063\u3066\u307e\u3057\u305f\u30fb\u30fb\u30fb<\/p>\n\n\n\n
\u8ffd\u8a18\uff1a
\u3053\u306e\u30b5\u30f3\u30d7\u30eb\u3067\u3001Office365\u306eAOuth2\u30a2\u30af\u30bb\u30b9\u30c8\u30fc\u30af\u30f3\u3092\u5f97\u308b\u306b\u306f\u3001Micrsoft.Identity.Client\u30d1\u30c3\u30b1\u30fc\u30b8\u304c\u5fc5\u8981\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4ee5\u524d\u3001Office365\u3068POP3\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u4f7f\u7528\u3057\u305f\u3001\u81ea\u793e\u7528\u5b89\u5426\u78ba\u8a8d\u30b7\u30b9\u30c6\u30e0\u3092 … \u7d9a\u304d\u3092\u8aad\u3080