Dot Guru

1. Kerberos is faster than NTLM: Pass through is not applicable to Kerberos. 2. In Kerberos authentication both client and server are authenticated mutually. In NTLM one client is validated, which allows intruders can get the client response.s 3. Kerberos is a open standard NTLM is  proprietary  to Microsoft. 4. Kerberos allows delegation, NTLM(double hop problem because of this) do not. 5. Kerberos supports Smart Card logon, NTLM do not. These are beautifully explained in below article. Ref: http://windowsitpro.com/security/comparing-windows-kerberos-and-ntlm-authentication-protocols

Please use the below formula in [Column validation] of the list column edit section. Please replace the [Email] with your column name. Formula: --------------------------------------------------------------------- =AND(     ISERROR(FIND(" ", [Email],1)),     IF(ISERROR(FIND("@", [Email],2)),         FALSE,         AND(             ISERROR(FIND("@",[Email], FIND("@", [Email],2)+1)),             IF(ISERROR(FIND(".", [Email], FIND("@", [Email],2)+2)),                 FALSE,                 FIND(".", [Email], FIND("@", [Email],2)+2) < LEN([Email])             )         )     ) ) ------------------------------------------------------------------------