Failure to give timely notice to either the summoned party or the Bureau in the manner described in this paragraph means that the notified person has failed to institute a proceeding to quash and the district court has no jurisdiction to hear the proceeding. Thus, for example, if the notified person mails a copy of the petition to the summoned person but not to the designated Bureau employee and office, the notified person has failed to institute a proceeding to quash. Similarly, if the notified person mails a copy of such petition to the summoned person, but instead of sending a copy of the petition by registered or certified mail to the designated employee and office, the notified person gives the designated employee and office the petition by some other means, the notified person has failed to institute a proceeding to quash.
27 C.F.R. §70.27
26 U.S.C. 7609