UCS 2.4 - Univention

4 Univention Directory Manager
entered in the Name server input field of the Start of Authority tab.
’TXT records’ tab
Text records (known as TXT records in DNS terminology) can be defined here. These contain human-
readable text and can contain descriptive information, which is used in anti-spam measures, for ex-
ample.
TXT Record
Descriptive text for this zone. Text records must not contain umlauts or other special characters.
’MX records’ tab
The mail exchanger entry for a zone (called MX record in DNS terminology) is important DNS infor-
mation necessary for e-mail routing. It points to the computer which accepts e-mails for a domain.
Priority (*)
A numerical value between 0 and 65535. If several mail servers are available for the MX record, an
attempt will be made to engage the server with the lowest priority value first.
Mail Server (*)
The mail server responsible for this domain as fully qualified domain name with a full stop at the end.
Only canonical names and no alias names can be used here.
4.5.9.2 Alias record
A pointer to an existing, canonical DNS name can be defined here using an alias record (also known as
CNAME record in DNS terminology). Any number of alias records can be defined to one canonical name.
An alias record must always be assigned to a forward lookup zone and can therefore only be added to a
forward lookup zone or a subordinate container.
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’General’ tab
Alias (*)
The alias name as fully qualified domain name with a full stop at the end or as a relative domain name
which should point to the canonical name.
Zone Time-to-Live
The time to live specifies how long these files may be cached by other DNS servers. The preset value
is three hours.