ITU-T X.1248 PDF

This Recommendation identifies types and characteristics of spam over instant messaging (SPIM). In order to mitigate the production and propagation of SPIM, this Recommendation specifies technical requirements for countering SPIM, involving both the instant messaging (IM) client and the IM server. This Recommendation mainly focuses on anti-SPIM measures of the IM system layer, and is applicable for IM service operators.