This information is based on the Microsoft Mail for PC Networks gateway to X.400 mail systems. Certain fields, particularly "DDA," and the length limitations may not apply in all X.400-based messaging systems. The custom recipient address is in the following format:
[X400:g=GivenName;s=Surname;o=Organization;ou=OrganizationalUnit; p=PRMD;a=ADMD;c=Country;]
| Label | Description | Maximum Length |
|---|---|---|
| G= | Given name | 16 |
| I= | Initials | 5 |
| S= | Surname (required if G, I or Q are used) | 40 |
| Q= | Generation Qualifier | 3 |
| CN= | Common name | 64 |
| X.121= | X.121 address | 15 |
| N-ID= | User agent numeric identifier | 32 |
| T-TY= | Terminal type | 3 |
| T-ID= | Terminal identifier | 24 |
| O= | Organization | 64 |
| OU1= | Organizational unit #1 | 32 |
| OU2= | Organizational unit #2 | 32 |
| OU3= | Organizational unit #3 | 32 |
| OU4= | Organizational unit #4 | 32 |
| P= | Private Management Domain (PRMD) | 16 |
| A= | Administrative Management Domain (ADMD - required) | 16 |
| C= | Country (required) | 2 or 3 |
| DDA= | Domain Defined Attribute (format => dda:<type>=<value>;) | 8, 128 |