Re: Port 25 closing?

From: Mark Haney (markh_at_uptimecomputer.net)
Date: 03/08/05

  • Next message: Tom Weniger: "Re: [Fedora] Re: Port 25 closing?" 
    To: For users of Fedora Core releases <fedora-list@redhat.com>
Date: Tue, 08 Mar 2005 15:28:59 -0500

    On Tue, 2005-03-08 at 13:11 -0700, Ashley M. Kirchner wrote:
    > This is slightly OT, but ti's been driving me nuts, so I'm hoping
    > someone here might have some suggestions as to what to look for here. I
    > have one Windows XP (SP2) machine that seems to randomly prevent
    > connections to our mail server via port 25. Our internal network
    > connects to our mail server, which is outside of our firewall and only
    > this one machine is having this problem. For no apparent reason at all
    > it will suddenly deny all connections made to the mail server through
    > port 25 (it can still RECEIVE e-mail since that goes over secure IMAP
    > port, but it can't send.) I can log onto the firewall, and everything
    > works as far as opening a connection to the mail server. I can get onto
    > a different machine on the network, and connect to the mail server just
    > fine, so I know it's not a firewall issue. It's just this ONE XP
    > machine that's experiencing this problem. And it only started happening
    > after installing SP2. Looking in Windows' firewall log, there's nothing
    > that points to port 25 being blocked. I can't telnet (to anything on
    > port 25, anywhere) from that machine, can't send e-mail, nothing. The
    > solution? Reboot the machine, and suddenly everything works again. So,
    > what gives?

    I have seen this problem on several SP2 boxes recently. In every case
    killing the firewall has fixed it. Personally, SP2 _causes_ more
    problems than it allegedly fixes IMHO. I am dreading the day it will be
    a mandatory install for my clients.

    >
    > --
    > W | I haven't lost my mind; it's backed up on tape somewhere.
    > +--------------------------------------------------------------------
    > Ashley M. Kirchner <mailto:ashley@pcraft.com> . 303.442.6410 x130
    > IT Director / SysAdmin / Websmith . 800.441.3873 x130
    > Photo Craft Laboratories, Inc. . 3550 Arapahoe Ave. #6
    > http://www.pcraft.com ..... . . . Boulder, CO 80303, U.S.A.
    >
    >
    >
    >
    >

    --------------------------------------
    Mark Haney
    markh@uptimecomputer.net
    Fedora Core release 3 (Heidelberg) Kernel: 2.6.10-1.770_FC3 GNU/Linux
    15:27:21 up 4 days, 5:07, 2 users, load average: 2.35, 2.57, 2.43 

    -- 
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  • Next message: Tom Weniger: "Re: [Fedora] Re: Port 25 closing?"

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