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  2. TXT record - Wikipedia

    en.wikipedia.org/wiki/TXT_record

    A domain may have multiple TXT records associated with it, provided the DNS server implementation supports this. [1] Each record can in turn have one or more character strings. [2] Traditionally these text fields were used for a variety of non-standardised uses, such as a full company or organisation name, or the address of a host.

  3. DomainKeys Identified Mail - Wikipedia

    en.wikipedia.org/wiki/DomainKeys_Identified_Mail

    A CNAME record can also be used to point at a different TXT record, for example when one organization sends email on behalf of another. The receiver can use the public key (value of the p tag) to then validate the signature on the hash value in the header field, and check it against the hash value for the mail message (headers and body) that ...

  4. OS/360 Object File Format - Wikipedia

    en.wikipedia.org/wiki/OS/360_Object_File_Format

    All records are exactly 80 bytes long; unused fields should be blank-filled. The first byte of every record is always the binary value 02. The next 3 bytes are always the record type. Character values are in EBCDIC. The remainder of each record's fields are dependent on the record type.

  5. Wildcard DNS record - Wikipedia

    en.wikipedia.org/wiki/Wildcard_DNS_record

    A wildcard DNS record is a record in a DNS zone that will match requests for non-existent domain names. A wildcard DNS record is specified by using a * as the leftmost label (part) of a domain name, e.g. *.example.com. The exact rules for when a wildcard will match are specified in RFC 1034, but the rules are neither intuitive nor clearly ...

  6. List of file signatures - Wikipedia

    en.wikipedia.org/wiki/List_of_file_signatures

    In the table below, the column "ISO 8859-1" shows how the file signature appears when interpreted as text in the common ISO 8859-1 encoding, with unprintable characters represented as the control code abbreviation or symbol, or codepage 1252 character where available, or a box otherwise. In some cases the space character is shown as ␠.

  7. DMARC - Wikipedia

    en.wikipedia.org/wiki/DMARC

    Records can be put in a database as a relation and viewed in a tabular form. The XML schema is defined in Appendix C of specifications [15] and a raw record is exemplified in dmarc.org. [16] Here we stick with a relational example, which better conveys the nature of the

  8. 15 books we can't wait to read: Most anticipated releases of 2025

    www.aol.com/15-books-cant-wait-read-140018897.html

    The third book in the Yarros’ “Empyrean” series comes out in January from Entangled Publishing. The follow-up to “Fourth Wing” and “Iron Flame” swaps Basgiath War College lessons for ...

  9. Sender Policy Framework - Wikipedia

    en.wikipedia.org/wiki/Sender_Policy_Framework

    A typical SPF HELO policy v=spf1 a mx ip4:192.0.2.0 -all may execute four or more DNS queries: (1) TXT record (SPF type was obsoleted by RFC 7208), (2) A or AAAA for mechanism a, (3) MX record and (4+) A or AAAA for each MX name, for mechanism mx. Except the first one, all those queries count towards the limit of 10.