[Pop3KnownAuthenticationType enumeration [Flags] public enum Pop3KnownAuthenticationType : long 价值观 姓名 价值 描述 None 0 无 Login 1 https://tools.ietf.org/id/draft-murchison-sasl-login-00.txt OAUTH2 2 https://tools.ietf.org/html/rfc7628 NTLM 4 http://davenport.sourceforge.net/ntlm.html https://tools.ietf.org/doc/tcllib/html/sasl.html Plain 8 https://tools.ietf.org/html/rfc4422 GSSAPI 10 GSS-API https://tools.ietf.org/html/rfc2078 https://tools.ietf.org/html/rfc2222 Kerberos V5 https://tools.ietf.org/html/rfc4752 CramMD5 20 https://tools.ietf.org/html/rfc2195 External 40 https://tools.ietf.org/html/rfc2222 KerberosV4 80 https://tools.ietf.org/html/rfc2222 Anonymous 100 https://tools.ietf.org/html/rfc4505 DigestMD5 200 https://tools.ietf.org/html/rfc2831 GSSSPNEGO 400 GSS-SPNEGO https://tools.ietf.org/html/rfc5801#section-14 https://tools.ietf.org/html/rfc4178 OtpMd4 800 https://tools.ietf.org/html/rfc2444 OtpMd5 1000 https://tools.ietf.org/html/rfc2444 OtpSha1 2000 https://tools.ietf.org/html/rfc2444 SKEY 4000 https://tools.ietf.org/html/rfc1760 https://tools.ietf.org/html/rfc2222#section-7.3 PassDssSha3Des1 8000 https://tools.ietf.org/html/draft-newman-sasl-passdss-00 ScramSha1 10000 https://tools.ietf.org/html/rfc5802 ScramSha1Plus 20000 https://tools.ietf.org/html/rfc5802 ScramSha224 40000 ScramSha224Plus 80000 ScramSha256 100000 https://tools.ietf.org/html/rfc7677 ScramSha256Plus 200000 https://tools.ietf.org/html/rfc7677 ScramSha384 400000 ScramSha384Plus 800000 ScramSha512 1000000 https://tools.ietf.org/html/draft-melnikov-scram-sha-512-01 ScramSha512Plus 2000000 https://tools.ietf.org/html/draft-melnikov-scram-sha-512-01 User 100000000 https://tools.ietf.org/html/rfc1939#page-13 APOP 200000000 https://tools.ietf.org/html/rfc1939#page-15 也可以看看 命名空间 Aspose.Email.Clients.Pop3 部件 Aspose.Email]