Event ID - 11507

Event Id11507
SourceMSExchange Pop3
DescriptionReady to accept clients on the POP3 interface.
Event InformationThis information from some newsgroups may help you:
Unable to start the Internet Mail Service because the routing table could not be read. Wait a few minutes to allow any routing table updates to complete and then try to start it again. If this problem persists, check the configuration on the Connections and Address Space pages of the Internet Mail Service properties.This issue can be caused by third-party antivirus software services that are currently active, if another program is using the Transmission Control Protocol (TCP) port that the information store uses for the corresponding protocol. If a program is already using port 110, 119 or 143, the information store is unable to open these ports for the Post Office Protocol, version 3 (POP3), Network News Transport Protocol (NNTP) or Internet Message Access Protocol, version 4rev1 (IMAP4) protocols respectively.
To resolve this issue, quit the program or service that is using the ports that the information store uses, or configure the program to use different ports and stop or turn off all antivirus services that are currently active on the system.
A better solution for you might be to set up Exchange to communicate with the Internet with SMTP. Then either allow your roaming clients POP access to the server (which wouldnt give them access to their calendars or anything besides mail) or set up VPN or RAS to allow them to connect to Exchange.
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