I have the same problems with my E72 using hotmail/live.de Email accounts. I tried the Nokia-specific installation file "networking_improvements.SIS" but it won´t work on my E72. (with device date 12.02.2014)"online certificate check dismissed" or with actual date (12.06.2016) "abgelaufenes Zertifikat/no actual certificate".
Softwareversion: 091.003
Date of softwareversion: 03 April 2012
Sonderversion: 091.003.C00.01
Modell: 72-1
Typ: RM-530
last actualisation: 22.11.2010
Hints to solve the problem are very welcome. :-)