LDAP and Sendmail offer sys admins considerable advantages for dynamic mail routing and centralized alias management. A common requirement, as an organization grows, is to support geographically dispersed mailservers. While this can be achieved by using subdomaining (i.e., email@example.com, firstname.lastname@example.org), it is generally preferable to route the mail dynamically from a single address (email@example.com). I’ll explore how this can be accomplished using Sendmail in conjunction with OpenLDAP.
Link: Sys Admin