Understanding Dynamic Internet Links; Stage 1: Groupwise Client In The Sending System; Stage 2: Groupwise Client In The Sending System; Section 2.7, "Understanding Dynamic Internet Links - Novell GROUPWISE 7 - MULTI-SYSTEM ADMINISTRATION Manual

2.7 Understanding Dynamic Internet Links

The following diagram illustrates the basic process of establishing a dynamic Internet link between
GroupWise systems.
no
2 1
yes yes
no
MTA
Domain
Undeliverable
Look up
no
3
Undeliverable
yes
Domain

2.7.1 Stage 1: GroupWise Client in the Sending System

The GroupWise client parses the address by breaking it down into parts and attempting to map it to
the userID.post_office.domain syntax. When the parsing is complete, the client looks in its own
system address book and asks: "Does the parsed address match any listed in the system address
book?"
The address can be typed by the user or obtained from the system address book.
If Yes: The GroupWise client sends this "internal" message to the MTA to be queued for
delivery.
If No: The GroupWise client attempts to resolve the address further. Go to

2.7.2 Stage 2: GroupWise Client in the Sending System

The GroupWise client checks the Internet domain addressing element listed after an @ sign in the
address syntax and asks: "Is this Internet domain defined in my GroupWise system (that is, is it
internal)?" If there is no Internet domain element at this point, the message is undeliverable.
If Yes: The client looks at the address to determine if all parts are present. If they are present, it
attempts to find a domain element in the address and resolve the address for local delivery. If a
domain element cannot be found, the message is undeliverable.
10
yes
9
no
GWIA
yes
no
yes
no no
4 5 6
yes no
MTA Undeliverable
DNS
GWMTP
12
8
DNS
7
no
yes
no
yes
ctp.com
MTA
DNS
11
SRV
TXT
DNS
SMTP
MX
Mail
Server
Stage 2.
Using Dynamic Internet Links 23