NTT DoCoMo to Strength Measures Against Short Mail Spam

Products & Services

TOKYO, JAPAN, March 24, 2004 --- NTT DoCoMo, Inc. and its eight regional subsidiaries announced new anti-spam countermeasures to cope with an increase in spam sent via "Short Mail," the short messaging service for DoCoMo's cellular and PHS phones.

Under the new countermeasures, which become effective on April 1, 2004, if a customer complains to DoCoMo about spam from a particular sender, DoCoMo will identify the source and then deny the sender access to all DoCoMo services for specified period of time. Once the suspension finishes, if further complaints are received from other customers, DoCoMo will terminate the spammer's subscriptions to all handsets.

DoCoMo has been using the same countermeasures for spam sent via i-mode® mail since July 10 last year. 3,009 lines have been suspended and 21 lines have been terminated since this time.

DoCoMo is committed to protecting the convenience and usefulness of mobile internet services for all customers, and will continue to aggressively promote effective anti-spam measures.


About NTT DoCoMo
NTT DoCoMo is the world's leading mobile communications company with more than 48 million customers. The company provides a wide variety of leading-edge mobile multimedia services. These include i-mode®, the world's most popular mobile internet service, which provides e-mail and internet access to over 40 million subscribers, and FOMA®, launched in 2001 as the world's first 3G mobile service based on W-CDMA. In addition to wholly owned subsidiaries in Europe and North America, the company is expanding its global reach through strategic alliances with mobile and multimedia service providers in Asia-Pacific, Europe and North America.
NTT DoCoMo is listed on the Tokyo (9437), London (NDCM), and New York (DCM) stock exchanges. For more information, visit www.nttdocomo.co.jp/english

i-mode and FOMA are trademarks or registered trademarks of NTT DoCoMo, Inc. in Japan and other countries.
NTT DoCoMo's FOMA service is available only to subscribers in Japan.

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