Multiple buffer overflows in the IMAILAPILib ActiveX control (IMailAPI.dll) in Ipswitch IMail Server before 2006.2 allow remote attackers to execute arbitrary code via the (1) WebConnect and (2) Connect members in the (a) IMailServer control; (3) Sync3 and (4) Init3 members in the (b) IMailLDAPService control; and the (5) SetReplyTo member in the (c) IMailUserCollection control.

Stack-based buffer overflow in the SMTP Daemon in Ipswitch Collaboration 2006 Suite Premium and Standard Editions, IMail, IMail Plus, and IMail Secure allows remote attackers to execute arbitrary code via a long string located after an '@' character and before a ':' character.

Premium Anti-Spam in Ipswitch IMail Secure Server 2006 and Collaboration Suite 2006 Premium, when using a certain .dat file in the StarEngine /data directory from 20060630 or earlier, does not properly receive and implement bullet signature updates, which allows context-dependent attackers to use the server for spam transmission.