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TheGTUBE ("Generic Test for Unsolicited Bulk Email") is a 68-byte test string used to test anti-spam systems, in particular those based onSpamAssassin.[1] In SpamAssassin, it carries an anti-spam score of 1000 by default, which would be sufficient to trigger any installation.
The contents of the string are as follows:
XJS*C4JDBQADN1.NSBN3*2IDNEN*GTUBE-STANDARD-ANTI-UBE-TEST-EMAIL*C.34X
and should be placed in the message body of an RFC 5322 compliantemail message, without any line breaks or whitespace.
Checksums for the string (68 bytes, no trailing newline) are as follows:
| Hash type | Value |
|---|---|
| CRC32 | dfdf8070 |
| MD5 | 6a684e1cdca03e6a436d182dd4069183 |
| SHA1 | c13086867f444d503829044f504826177e3eb438 |
| SHA224 | 1c23f40d1c94c2337176d7baa3e1d820adf6bd329f84d702f9f4f8e1 |
| SHA256 | 4418994365912e23b756ec7f14960f1a89230e44e6acb74de055db7c092f8b9c |
| SHA384 | 7c717360788affa4fa3ff6681456d2f9153311ae4d712fdc |
| SHA512 | 981e015cb8ade405d59ec9bb723a2e6b876fb40f597b368d7095f6734e64fe09 |
There exist some varieties, notably the NAItube (which will carry a variable weight)[2] and the GTphish (which will trigger specifically as aphishing mail),[3] which are used in theMcAfee implementation ofSpamAssassin.
