Exchange 2010 & Iphone4

Hi,

I have installed an sbs2011 server for a company, all is ok except that when I try to set up a couple of users on iPhone's, when they go their email it shows "this message has not been downloaded from the server" in the body but the header is there.

I'm also getting an issue in owa when trying to reply to or forward an email I get the following
Error:
Url: https://**.******.com:443/owa/?ae=PreFormAction&a=Reply&t=IPM.Note&id=RgAAAABY0tXQO02OSaTaCbbid1GuBwDAp3ucXp2dRYdZD4g8Uc41AAAAPA44AADAp3ucXp2dRYdZD4g8Uc41AAAAcLoyAAAJ&pspid=_1317729772119_706067841
User host address: 93.**.**.**
User: Admin Account
EX Address: /o=First Organization/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Recipients/cn=Admin Account
SMTP Address: sbsadmin@*********-*********.co.uk
OWA version: 14.1.218.13
Mailbox server: **-*.**.local

Exception
Exception type: System.ArgumentException
Exception message: imceaDomain must be a valid domain name.

Call stack
Microsoft.Exchange.Data.Storage.InboundConversionOptions.CheckImceaDomain(String imceaDomain)
Microsoft.Exchange.Data.Storage.InboundConversionOptions..ctor(String imceaDomain)
Microsoft.Exchange.Clients.Owa.Core.Utilities.CreateInboundConversionOptions(UserContext userContext)
Microsoft.Exchange.Clients.Owa.Core.ReplyForwardUtilities.CreateReplyOrReplyAllItem(BodyFormat bodyFormat, Item item, ReplyForwardFlags flags, Boolean replyAll, UserContext userContext, StoreObjectId parentFolderId)
Microsoft.Exchange.Clients.Owa.Core.ReplyForwardUtilities.CreateReplyItem(BodyFormat bodyFormat, Item item, ReplyForwardFlags flags, UserContext userContext, StoreObjectId parentFolderId)
Microsoft.Exchange.Clients.Owa.Premium.Controls.ItemReplyPreFormAction.Execute(OwaContext owaContext, ApplicationElement& applicationElement, String& type, String& state, String& action)

I have done some research and found a couple of blogs that say this will go away if you sort out your accepted domain, but I haven't got any spaces in mine. Please see the results of the Get-AcceptedDomain | fl below;

I have I have removed the customers name for security reasons, but I have left the context as is e.g. my-domain.com is changed to **.******.com so you can see the setup.

RunspaceId                 : e3f2cfc6-3c4f-404b-a2de-67a44cee6767
DomainName                 : **.local
DomainType                 : Authoritative
AddressBookEnabled         : True
Default                    : False
AuthenticationType         :
LiveIdInstanceType         :
PendingRemoval             : False
FederatedOrganizationLink  :
MailFlowPartner            :
OutboundOnly               : False
PerimeterDuplicateDetected : False
AdminDisplayName           :
ExchangeVersion            : 0.1 (8.0.535.0)
Name                       : **.local
DistinguishedName          : CN=**.local,CN=Accepted Domains,CN=Transport Settings,CN=First Organization,CN=Microsoft E
                             xchange,CN=Services,CN=Configuration,DC=**,DC=local
Identity                   : **.local
Guid                       : 0665a1b8-c46f-40ae-b68c-17ae2656aee5
ObjectCategory             : **.local/Configuration/Schema/ms-Exch-Accepted-Domain
ObjectClass                : {top, msExchAcceptedDomain}
WhenChanged                : 12/09/2011 15:40:56
WhenCreated                : 15/08/2011 11:29:10
WhenChangedUTC             : 12/09/2011 14:40:56
WhenCreatedUTC             : 15/08/2011 10:29:10
OrganizationId             :
OriginatingServer          : **-*.**.local
IsValid                    : True

RunspaceId                 : e3f2cfc6-3c4f-404b-a2de-67a44cee6767
DomainName                 : ********-********.co.uk
DomainType                 : Authoritative
AddressBookEnabled         : True
Default                    : True
AuthenticationType         :
LiveIdInstanceType         :
PendingRemoval             : False
FederatedOrganizationLink  :
MailFlowPartner            :
OutboundOnly               : False
PerimeterDuplicateDetected : False
AdminDisplayName           :
ExchangeVersion            : 0.1 (8.0.535.0)
Name                       : ******** *******
DistinguishedName          : CN=****** *******,CN=Accepted Domains,CN=Transport Settings,CN=First Organization,CN=M
                             icrosoft Exchange,CN=Services,CN=Configuration,DC=**,DC=local
Identity                   : ********** **********
Guid                       : 78a0233e-28c2-4735-8535-b044cabbbc9d
ObjectCategory             : **.local/Configuration/Schema/ms-Exch-Accepted-Domain
ObjectClass                : {top, msExchAcceptedDomain}
WhenChanged                : 04/10/2011 12:25:15
WhenCreated                : 15/08/2011 15:14:26
WhenChangedUTC             : 04/10/2011 11:25:15
WhenCreatedUTC             : 15/08/2011 14:14:26
OrganizationId             :
OriginatingServer          : **-*.**.local
IsValid                    : True

RunspaceId                 : e3f2cfc6-3c4f-404b-a2de-67a44cee6767
DomainName                 : ********-******.co.uk
DomainType                 : Authoritative
AddressBookEnabled         : True
Default                    : False
AuthenticationType         :
LiveIdInstanceType         :
PendingRemoval             : False
FederatedOrganizationLink  :
MailFlowPartner            :
OutboundOnly               : False
PerimeterDuplicateDetected : False
AdminDisplayName           :
ExchangeVersion            : 0.1 (8.0.535.0)
Name                       : ******* ****** Org
DistinguishedName          : CN=********** ******** Org,CN=Accepted Domains,CN=Transport Settings,CN=First Organization,
                             CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=**,DC=local
Identity                   : ******** ******** Org
Guid                       : f45b2184-d53b-48e7-9b63-0b27500f7ede
ObjectCategory             : **.local/Configuration/Schema/ms-Exch-Accepted-Domain
ObjectClass                : {top, msExchAcceptedDomain}
WhenChanged                : 15/08/2011 15:36:16
WhenCreated                : 15/08/2011 15:32:39
WhenChangedUTC             : 15/08/2011 14:36:16
WhenCreatedUTC             : 15/08/2011 14:32:39
OrganizationId             :
OriginatingServer          : **-*.**.local
IsValid                    : True

RunspaceId                 : e3f2cfc6-3c4f-404b-a2de-67a44cee6767
DomainName                 : ********-******.com
DomainType                 : Authoritative
AddressBookEnabled         : True
Default                    : False
AuthenticationType         :
LiveIdInstanceType         :
PendingRemoval             : False
FederatedOrganizationLink  :
MailFlowPartner            :
OutboundOnly               : False
PerimeterDuplicateDetected : False
AdminDisplayName           :
ExchangeVersion            : 0.1 (8.0.535.0)
Name                       : ****** ******* Com
DistinguishedName          : CN=********* ******** Com,CN=Accepted Domains,CN=Transport Settings,CN=First Organization,
                             CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=**,DC=local
Identity                   : ********** *********Com
Guid                       : 0bdf4c45-5c1d-4c6f-8075-6b98a1423933
ObjectCategory             : **.local/Configuration/Schema/ms-Exch-Accepted-Domain
ObjectClass                : {top, msExchAcceptedDomain}
WhenChanged                : 04/10/2011 12:25:15
WhenCreated                : 15/08/2011 15:36:36
WhenChangedUTC             : 04/10/2011 11:25:15
WhenCreatedUTC             : 15/08/2011 14:36:36
OrganizationId             :
OriginatingServer          : **-*.**.local
IsValid                    : True

any help would be greatly appreciated.