Hi
What you might be running into is 1 of 2 things either mtu problems on adsl lines or yuor isp iinet or telstra blocking of port 25. By the looks of things the iinet guys have presumed it to be an mtu problem which could have occured because telstra change/modified their dslam at the exchange. if you are using pppoe it woudl be better to set it in there, cause it will cause all tcp session to be clamped to that mtu size, off the top of my head I can remember the setting for that. if you are being blocked on port 25 you can do some simple tests, but I would presume not as it works under windows (that sound bad) Do you run a mail server or are you attempting to get mail from your isp ? Alex On Fri, Sep 03, 2004 at 10:07:06AM +1000, John Kyatt wrote: > Hi, > > Normally I try to solve my own problems, and "Red Hat in 24 Hours" has most of > what I need to know. I'm a relative newbie to Linux, having installed it on my > old Celeron 850 late last year. The latest problem has gone beyond the book, > and I suspect that we can't go outside Australia for a solution. My ISP has > indicated that the problem lies with Telstra, as my hardware and their servers > have not undergone any changes which would cause the problems I'm > experiencing. I'm writing this from a Windows machine. Since 1/9 I haven't > been able to send or receive any mail on the Red Hat machine. Has anyone in > the SLUG been affected by Telstra upgrades to their ADSL lines? On the Windows > machine I had to download Dr.TCP and make some changes to the settings. This > was to limit the packet size going through the modem/router, for reasons best > understood by the techos. My ISP - iinet - gave me some settings to change on > the Red Hat machine through the Terminal and Text Editor, which accepted, but I > still can't send or receive any mail. I live in the Canberra/Queanbeyan area. > Below is the mail item which might help explain things better. I have Nedit, > not Pico on my machine, the mtu value was 1400, not 1420, and <CTRL-S> was used > to save the changes. > > Hi John, > As a follow on from our phone conversation this morning, please find > below how to fix the linux machines permanently. > 1. First, log in as root. > 2. At a terminal prompt type in the following: > pico /etc/rc.local > And press Enter > 3. You should see an editor screen appear. Use the arrow keys on the > keyboard to go to the very bottom of the file. > 4. Type the following at the bottom of the file: > > ifconfig eth0 mtu 1420 > 5. Then press <CTRL-X> (hold down the Ctrl key on your keyboard, then > press the letter X) > 6. Press 'y' to confirm the changes when prompted to Save modified > buffer. > 7. You should now be able to reboot the linux machine and the changes > will be permanent. > Regards > Jason > iiNet Senior Support > > --- > Outgoing mail is certified Virus Free. > Checked by AVG anti-virus system (http://www.grisoft.com). > Version: 6.0.745 / Virus Database: 497 - Release Date: 27/08/2004 > -- > slug-admin > -- > SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ > Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
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