Excessive email messages in Queue & Problem with SMTP Server Remote Queue Length Alert

Discussion in 'Windows Small Business Server' started by Nick Dee, Jan 25, 2005.

  1. Nick Dee

    Nick Dee Guest

    Having installed SBS 2003 with a POP Connection, and an SMTP mail delivery
    service, I thought all was in perfect working order until I started recently
    getting these alert messages from the Server:
    ------------------------------------------------------------------------------
    SMTP Server Remote Queue Length Alert

    A large number of messages are pending in the e-mail server send queue.

    Verify that you have Internet connectivity. If you can view Web sites
    normally, contact your Internet service provider (ISP) to determine if there
    is a problem with their e-mail server.

    You can disable this alert or change its threshold by using the Change Alert
    Notifications task in the Server Management Monitoring and Reporting
    taskpad.

    -------------------------------------------------------------------

    I have checked both the Microsoft Knowledge Base and the Newsgroup here for
    suggested fixes, and have implemented the following changes:

    1). Checked to make sure that Port 25 was not acting as an open SMTP relay
    (it wasn't).

    2). Turned on Recipient Filtering in Exchange System Manager to "filter
    recipients who are not in the Directory." This is supposedly supposed to
    ignore spammers sending messages with where xxxx is a
    random address generated by the spammers. By doing this, those messages that
    are addressed to people not recognized in the Active Directory are rejected
    and no NDRs are supposed to be generated.

    3). Cleaned out the Queue of the NDR reports as per MKB article 324958.

    4). Turned off the NDR reports entirely in Microsoft Exchange. (Exchange
    System manager, GLobal Settings, Internet Message Format, Advanced Tab,
    uncheck Allow non-delivery reports).

    After doing all this, for about a day, the alert messages stopped, but alas
    now they are back again!

    I checked the Queue (in Exchange System Manager\Servers\SERVER\Default SMTP
    Connecter) and noticed that it is always the same message with the following
    attributes:

    Sender
    Envelope Recipients:
    SMTP:; SMTP:xxx:mad:ylpvm29.prodigy.net; SMTP:;
    SMTP:;
    No Subject

    (where I have replaced the names with xxx above to maintain privacy)

    One thing: I am not sure that the messages are NDRs. They could be spam, or
    they could be some legitimate message that keeps trying be sent by one of
    the Outlook clients. But why does the queue keep getting filled up with the
    same message over and over?

    Also of concern is the Activity report for the server, which shows the
    following:

    E-mail Sent

    User Name Internal E-mail Size (MB) External E-mail Size (MB) Total
    E-mail Sent Size (MB)
    Administrator 1 0.0 18,165 736.3 18,166 736.3
    User1 10 0.1 158 1.4 168 1.5
    User2 7 0.1 32 0.8 39 0.9
    User3 3 0.0 19 0.1 22 0.1
    User4 2 0.0 0 0.0 2 0.0
    User5 0 0.0 2 0.0 2 0.0
    Company Total 23 0.3 18,376 738.5 18,399 738.8


    Notice that the Administrator account has 18,165 messages sent in the two
    week reporting period, and that it accounts for 736 MB of data! Obviously
    something is seriously wrong, because the Administrator is me, and I haven't
    the foggiest idea why so much stuff is being sent out unless they are NDR
    messages from the time before I shut off the NDR messages and made the
    changes to exclude incoming mail not addressed to Active Directory members
    of the domain.
    Any ideas from the SBS community?

    Nick Dee
     
    Nick Dee, Jan 25, 2005
    #1
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  2. Running Trend? There's a pop patch on their site.
     
    Susan Bradley, CPA aka Ebitz - SBS Rocks [MVP], Jan 25, 2005
    #2
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  3. Nick Dee

    Nick Dee Guest

    After reading some other posts, I'm wondering whether the problem might be
    related to the fact that I have an SBS 2003 POP connector downloading email
    from pacbell and am also using Pacbell's SMTP server to send mail, while at
    the same time hosting a domain name on which SBS 2003 also receives mail.
    All mail is being sent out via the pacbell SMTP server.

    Could there be some problem which is causing a mismatch in addressing and
    might be generating the excessive queue email activity?

    My original idea in setting up the system this way was that I wanted the
    users to be able to keep their old pacbell email POP accounts, while at the
    same time allowing them to use their new domain email accounts.
     
    Nick Dee, Jan 25, 2005
    #3
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