Labels:text | screenshot | diagram | rectangle | plan | square | line OCR: ELEMENTS OF A MESSAGE HANDLING SYSTEM Directory Users, MTAS, Hosts: Gateways Message Handling System Message Transfer System Message Transfer MTA Agent (MTA, Message Store MS MS Agent. (MS) UA Figure 1: User agents post and receive mail from message transfer agents. Message stores provide temporary storage. Message transfer agents route messages to their des- finations, with the help of the directory.
