IMAP exchange 2010 not working

Hi Rabbit23, v1.3 of the Exchange iApp will automatically create an EAV monitor that supports IMAPS (utilizing curl-apd, which became available in BIG-IP v11.4.1).

Here's the text of that EAV file. You'll need to save it as a shell script and then import into BIG-IP, and configure it like you would any other EAV monitor. You will need to disable strictness to apply it to the IMAP pool.

!/bin/sh
 These arguments supplied automatically for all external monitors:
 $1 = IP (nnn.nnn.nnn.nnn notation)
 $2 = port (decimal, host byte order)

 This script expects the following Name/Value pairs:
  USER  = the username associated with a mailbox
  PASSWORD = the password for the user account
  DOMAIN = the Windows domain in which the account lives

 Remove IPv6/IPv4 compatibility prefix (LTM passes addresses in IPv6 format)

NODE=`echo ${1} | sed 's/::ffff://'`
if [[ $NODE =~ ^[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}$ ]]; then
     node is v4
    NODE=${NODE}
else
     node is v6
    NODE=[${NODE}]
fi
PORT=993
FOLDER="INBOX"
PIDFILE="/var/run/`basename ${0}`.appname_${USER}_${NODE}_ad.pid"
RECV='EXISTS'

 kill of the last instance of this monitor if hung and log current pid
if [ -f $PIDFILE ]
then
   echo "EAV exceeded runtime needed to kill ${NODE}:${PORT}" | logger -p local0.error
   kill -9 `cat $PIDFILE` > /dev/null 2>&1
fi
echo "$$" > $PIDFILE
/usr/bin/curl-apd -k -v -u ${DOMAIN}\\${USER}:${PASSWORD} -X "SELECT ${FOLDER}" imaps://${NODE}:${PORT} 2>&1 | grep "${RECV}" > /dev/null
STATUS=$?
rm -f $PIDFILE
if [ $STATUS -eq 0 ]
then
    echo "UP"
fi
exit

As to why clients can't connect even when the pool is marked up with a TCP monitor, you'll probably need to sniff the IMAP traffic to see what's going on there.

Mike