NOKIA M$ Exchange Email problems with old mobiles
You can try fixing NOKIA M$ Exchange Email unrecognised certificate problems with old mobiles (such as the E61i) by manually adding the missing Class 2 Certification Authority Root Certificate. For example if your M$ Exchange SSL certificate was bought from GoDaddy just open your NOKIA web browser and goto the GoDaddy Certificate Chain website and click on the DER Format CER certificate file !