OTTAWA, April 18— An unidentified technical problem has left BlackBerry users without wireless e-mail since Tuesday evening.
No one at Research in Motion could be reached for comment. A recorded message on the companyís customer support line confirms the shutdown but offers no information about its cause or suggestions on when service will be restored.
All messages traveling to and from BlackBerry handheld devices pass through special e-mail servers that are operated by Research in Motion. During a recent patent trial, the company said that those servers are based near its headquarters in Waterloo, Ontario.