Exchange current sessions connected times very long

Posted on 2007-10-17
Last Modified: 2008-12-15
I am running Exchange 2003 on Server 2003.

Email delivery has been slow today.  SMTP mail and local exchange mail is not being delivered.  When I check the "Default SMTP Virtual Server" "Current Sessions" I see a list of sessons with very long connection times.  17096 Seconds and counting.  When I check the settings for SMTP it show the connection timeout as 10 minutes.  

Is this Normal?

Question by:brittonv
    LVL 8

    Expert Comment

    Check DNS
    LVL 4

    Assisted Solution

    I would validate what the host are. Could be a device trying to use you as a relay.

    What queues are the messages in, if any?

    Can you telnet to port 25 on the exchange server?

    Are all of the services running?

    Are your stores mounted.

    The fact the internal mail is not working leads me to believe the stores may be offline. Do you recieve and bounce messages when one internal user sends a message to another?
    LVL 104

    Expert Comment

    That is usually down to one of two reasons.

    1. A spammer is attacking your server.
    2. Something is interfering with SMTP traffic and they aren't terminating correctly. AV, Antispam and firewalls are notorious for that.

    You need to ensure that any SMTP scanning features are disabled in the firewall and any desktop AV.


    If your question has been answered, please remember to accept the answer and close the question.
    LVL 8

    Author Comment

    Well I rebooted the exchange server and the problem went away, gotta love Windows.

    To answer the questions, yes I could telnet to port 25.  Mail was accetped but not delivered.  All Exchange services running and Stores were online.  

    Since rebooting my sessions are a couple minutes max.  I assume that the SMTP service had crashed.  However I didn't think that SMTP had anything to do with delivering mail sent locally with Exchange using a MAPI connection?

    LVL 104

    Accepted Solution

    SMTP is involved with delivery of email to groups.
    However if the server is being thrashed then it will affect the overall operation of Exchange.


    If your question has been answered, please remember to accept the answer and close the question.

    Expert Comment

    I have a similar problem with Exchange Server 2k3 however i am able to send mail internaly no problem.
    however i see the connections in the Current Sessions under Protocols / SMTP
    but non of the mail is getting delivered.
    I checked all the services and they are started and running, i disabled AV checking of the mail.
    Ensured that DNS is doing lookups etc
    I Have a Relay list of only allowed deny all others.
    Any suggestions.
    LVL 104

    Expert Comment

    C2_tech - this is an old question. Unlike a forum it is not possible to "bump" questions back up the list. The only people who will see your post are those that have already participated. Instead you should post your question as a new question in the Exchange Server Zone which will allow other experts the chance to see the question and respond.

    Exchange Server Zone Advisor.

    Write Comment

    Please enter a first name

    Please enter a last name

    We will never share this with anyone.

    Featured Post

    Live - One-on-One Exchange Help from Top Experts

    Solve your toughest problems, fast.
    Exchange experts are online now and ready to help you.

    Set up iPhone and iPad email signatures to always send in high-quality HTML with this step-by step guide.
    Set OWA language and time zone in Exchange for individuals, all users or per database.
    In this video we show how to create a Resource Mailbox in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.: Navigate to the Recipients >> Resources tab.: "Recipients" is our default selection …
    To add imagery to an HTML email signature, you have two options available to you. You can either add a logo/image by embedding it directly into the signature or hosting it externally and linking to it. The vast majority of email clients display l…

    759 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

    10 Experts available now in Live!

    Get 1:1 Help Now