# ldap address book - do you have an ldap directory address book defined?
# run netstat - any thunderbird connections to ldap, imap mail server, or other protocols shown in the netstat display?
#* MS-Windows: open a dos command window (Start, Programs, Accessories, Command Prompt), do then type '''netstat -a -b -oabo > netstat.log''' and hit enter. then type '''more netstat.log'''to look for lines that show thunderbird.exe.
#* linux/Mac: do netstat -tp | grep -i thunderbird
# If imap connections are shown in the netstat results above and if needed by the devoloper, get an [[MailNews:Logging|imap:5 log]] in a log file, which can be attached to a bug report