Blackbery Internet Service port numbers

Posted on 2009-04-19
Last Modified: 2012-05-06

I recently took over the management of a network with literally no security and my first task has been to put in place a cisco router with firewall. With this done our blackberry internet service has stopped working! Originally the mail server had a public IP address! now it sits behind the firewall.

Does someone know what protocol / port number BIS uses to talk to the mail server?

Question by:randombloke_
    LVL 58

    Accepted Solution


    BIS communicates with the mail server over standard email protocols. If you have Exchange, it communicates with OWA; otherwise, it can use POP3 or IMAP.

    What mail server is in place? If BIS is configured to communicate with OWA in Exchange, it will use either port 80 or 443, depending on what is configured in the Blackberry devices. The connection will be made to the IP address registered behind whichever domain name is specified as the OWA address; in other words, a domain of programmed into BIS will communicate with the server at on port 443 (https port).

    If you have some other mail server, it will be using either POP or IMAP. Their ports are 110 (POP) and 143 (IMAP), or 995 (Secure POP) and 993 (Secure IMAP).


    Author Comment

    Hi tigermatt

    As soon as I permitted 110 and configured port forwarding for POP3 to the mail server, BIS started working again.


    Write Comment

    Please enter a first name

    Please enter a last name

    We will never share this with anyone.

    Featured Post

    Why You Should Analyze Threat Actor TTPs

    After years of analyzing threat actor behavior, it’s become clear that at any given time there are specific tactics, techniques, and procedures (TTPs) that are particularly prevalent. By analyzing and understanding these TTPs, you can dramatically enhance your security program.

    Automapping, a wonderful feature with Exchange 2010 (SP2 onwards I believe), allows additional/Shared mailboxes that a user has access to be automatically mapped on Outlook client, simplifying the process by adding them while Outlook launches. Ho…
    Granting full access permission allows users to access mailboxes present in their database. By giving full access permission one can open and read the content of any mailbox but cannot send emails from that mailbox.
    To show how to generate a certificate request in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.:  First we need to log into the Exchange Admin Center. Navigate to the Servers >> Certificates…
    After creating this article (, I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…

    758 members asked questions and received personalized solutions in the past 7 days.

    Join the community of 500,000 technology professionals and ask your questions.

    Join & Ask a Question

    Need Help in Real-Time?

    Connect with top rated Experts

    14 Experts available now in Live!

    Get 1:1 Help Now