2.2.1.65 PidTagNextSendAcct Property
Type: PtypString ([MS-OXCDATA] section 2.11.1)
The PidTagNextSendAcct property ([MS-OXPROPS] section 2.807) specifies the server that a client is currently attempting to use to send mail. The format of this property is implementation-dependent. This property can be used by the client to determine which server to direct the mail to but is optional and the value has no meaning to the server.