The webmail interface for Ipswitch IMail 7.04 and earlier allows remote authenticated users to cause a denial of service (crash) via a mailbox name that contains a large number of . (dot) or other characters to programs such as (1) readmail.cgi or (2) printmail.cgi, possibly due to a buffer overflow that may allow execution of arbitrary code.
http://www.securityfocus.com/bid/3427
http://www.ipswitch.com/Support/IMail/news.html
http://archives.neohapsis.com/archives/bugtraq/2001-10/0082.html