What are the frequently used email attributes when mails are routing in Exchange Server?
legacyExchangeDn: This attribute is a unique legacy distinguished name which identifies your mailbox. This attribute is mainly used for backwards compatibility purposes for the Mail Application Programming Interface (MAPI) clients, for example, /o=org/ou=site/cn=recipients/cn=gyip. proxyAddresses: A multi-valued attribute that contains all the e-mail addresses for which you can receive mail. The format of this attribute is PREFIX :proxy, where PREFIX is either SMTP, X400, GWISE, or NOTES, for example, SMTP:gyip@microsoft.com. targetAddress: This attribute is the e-mail address to which you want to redirect the mail. This attribute is formatted like the proxyAddresses attribute, where there is a prefix that defines the address type, for example, “SMTP:gyip@microsoft.com”. The attribute is only for mail-enabled user or mail-enabled contact.