Any help on these much appreciated but if time is short Nos.3,4 urgent for me. 1. We have out internal domain.local and externalDomain.org. The recipient configuration - email - properties - email addresses shows up under the domain.local (at properties panel heading) and shows an @domain.local and @externalDomain.org in the list. I am somewhat confused as to the relationship between these two. Currently we have POP3 delivering our emails and those not configured yet on the server (yet on the ISP) are sent internet way with an internal relay and configured Hub Transport send connector. Is there anywhere I can understand about how these interact or how domain.local should be used? 2. If some of our users use OWA (simpler?) and some use Outlook (we have 2003, 2007 and 2010) are there any restrictions on how these methods interact? 3. I have configured a user and they have a mailbox which works internally via OWA. It is not getting emails from the ISP via the configured POP3. I cannot see anywhere to pur in the POP3 ISp server email address. Can someone tell me where this is? PS I did do it for another account during user setup but I did not do it for this later one during setup. 4. One of my emails is getting stuck on the ISP. It has an attachment of 14Mbyte. I have configured all I can to exceed this limit (I have set what I can find to 50MByte) but it still remains there. Any advice? Thanks.

3) If I understand you have a connector which receives mail from ISP. the internal user is connecting to your internal server , unless delivers the mail to your server his mailbox he will e able to see it. 4) As your connector is pulling the mail from ISP there are limits which be placed on your internal server both incoming and outgoing. if your mail has been stuck at ISP delivering the mail to you , your settings need to be changed , if the mail has been stuck sendimail from you , you need to his settings http://exchangepedia.com/2007/09/exchange-server-2007-setting-message-size-limits.html

Hi, 1. Domain.local is used in the sense that when you installed Exchange it took the FQDN name of your domain. You can actually delete the domain if you like, normally i don't bother since it doesn't really anoy anyone. When you have a policy with ExternalDomain.org you can receive mails on that domain, asuming you have a receive connector or edge transport server for it. 2. There are not restriction on what you need to use or wether one user can only use one version of outlook. You can restrict the version of Outlook if you desire, but the default is no restriction, unless it's a Exchange 2007/2010 and you answered no for when asked for Outlook 2003 or earliere doing the setup. OWA is default enabled for all users, but you can disable it if you like to restrict that as well. 3. You ask about POP3 account, and in a stardard Exchange you don't have the option of downloading from POP3 accouts. If you do want to download from POP3 you need a SBS server or you need to setup the Outlook client to download the mails and put them into the Exchange mailbox. 4. Take a look on the receive connector and make sure that all the receive limits are set to more than the default 10 MB mail size. /MartinExchange is a passion not just a collaboration software.

Thanks all for those comprehensive replies. I have set send, receive, and left the mailbox limits alone (default infinite?). This problem was on the receive side. I shall retest. PS I am using SBS 3008 R2 and Exchange SP3 (or is it 4). Incidentally I installed SP3 but did not follow the MS instructions (disable certain things) but it seems to work and the EBPA has a few advisories I am working through slowly.Many thanks for your time.