You depend on electronic mail (e-mail) as an essential business
tool. The iSeries™ server
uses protocols, like Simple Message Transfer Protocol (SMTP) and Post Office
Protocol (POP), to make your e-mail run smoothly and efficiently on the network.
These additional e-mail concepts will help you understand other e-mail
distribution methods.
- Multipurpose Internet Mail Extensions
- Multipurpose Internet Mail Extensions (MIME) is a standardized method
for organizing divergent file formats. SMTP is limited to 7-bit ASCII text
with a maximum line length of 1000 characters. MIME was developed to support
more advanced file types, such as rich text, images, and audio or video files.
MIME encodes files of binary type data to appear as simple SMTP data, using
headers to distinguish different file types within the message, before sending
the message with SMTP. The mail client then receives the message and decodes
it to the proper file types by interpreting the MIME headers to read the file.
- AnyMail/400 framework
- All incoming mail from SMTP for local users (users with mail accounts
on this iSeries server)
is processed by the AnyMail/400 framework. The mail server framework is a
mail distribution structure that allows the distribution of e-mail. The mail
server framework calls exit programs or snap-ins to handle specific mail types.
- SNADS
- System Network Architecture Distribution Services (SNADS) is an IBM® asynchronous
distribution service that defines a set of rules to receive, route, and send
electronic mail in a network of servers. In this topic, SNADS refers to a
user's profile in which the Preferred address is set
to User ID/Address. The preferred address tells the
mail server framework what fields to use in the system distribution directory
for the address. For more information about using SNADS, refer to the SNADS
topics in Send and receive e-mail on iSeries server.