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Grex > Agora > #4: Grex System Problems - Fall 2015/Winter 2016 | |
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| Author |
Message |
| 25 new of 223 responses total. |
gelinas
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response 17 of 223:
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Apr 12 22:12 UTC 2016 |
I think we are going to have to wait for Tony to check in. Now that grex is
a virtual machine, reverse DNS may not make sense.
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tod
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response 18 of 223:
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Apr 14 21:21 UTC 2016 |
Reverse DNS would be a good idea.
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kentn
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response 19 of 223:
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Jun 1 02:52 UTC 2016 |
Okay, we had another network issue and OpenBSD decided to check out of
consciousness for a while. Tony shocked it back to life again. Thank
you, Tony!
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tod
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response 20 of 223:
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Jun 7 22:19 UTC 2016 |
Thanks Tony!
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jovan
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response 21 of 223:
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Jun 23 20:47 UTC 2016 |
I would like to thank whoever installed Maxima on this machine. I can't
install any math software on my work computer and grex has just saved the day!
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kentn
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response 22 of 223:
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Jun 26 11:11 UTC 2016 |
Thanks for letting us know you use it! I think I installed that a while
back. There are several such applications on Grex, including Octave,
Maxima, FreeMat, and R. I'm glad it worked for you.
An incomplete list of installed softare on Grex is available at:
http://grex.org/software.xhtml
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sholmes
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response 23 of 223:
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Jul 5 08:18 UTC 2016 |
Thanks for haskell as well !
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tonster
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response 24 of 223:
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Jul 10 23:12 UTC 2016 |
resp:16, resp:18:
Unfortunately, it's not possible to get reverse DNS for grex. :( I tried
to do it, but AT&T has a silly limitation where they will only give
reverse DNS for a single domain name. Since it's hosted here, and I have
my own stuff on my network, tonster.com trumps grex.org and
arbornet.org. :) Thus, no reverse DNS. At least, no reverse DNS that
makes any real sense.
In other news, I just finally managed to get the SSL certificate
replaced. No more warnings about how dangerous grex.org is, though I'm
still not convinced that's a good thing. :)
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kentn
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response 25 of 223:
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Jul 13 02:04 UTC 2016 |
Thanks for investigating all this, Tony. Accessing grex's web page
now goes through without a hitch, as does accessing the RT help desk
pages.
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duszek
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response 26 of 223:
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Aug 24 17:51 UTC 2016 |
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kentn
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response 27 of 223:
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Sep 25 15:36 UTC 2016 |
On the evening of Sept. 23, 2016, Grex started refusing connections.
A reboot fixed the issue.
Thank you, Tony!
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duszek
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response 28 of 223:
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Dec 2 16:06 UTC 2016 |
good!
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jhesse
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response 29 of 223:
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Dec 19 19:49 UTC 2016 |
Is anybody else able to send email outside of grex? It seems that anything
I try sending to the spousal unit is silently getting dropped.
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jhesse
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response 30 of 223:
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Dec 22 16:22 UTC 2016 |
Ok, update. Got this bounce. "550 Local CT IP Reputation Policy".
...
<jhesse@ieee.org>: host us-smtp-2.mimecast.com[205.139.110.241] said: 550
Local
CT IP Reputation Policy (Reject) -
https://community.mimecast.com/docs/DOC-1369#550 (in reply to RCPT TO
command)
Reporting-MTA: dns; grex.org
X-Postfix-Queue-ID: C545E20396B
X-Postfix-Sender: rfc822; jhesse@grex.org
Arrival-Date: Thu, 22 Dec 2016 11:07:47 -0500 (EST)
Final-Recipient: rfc822; jhesse@ieee.org
Action: failed
Status: 5.0.0
Remote-MTA: dns; us-smtp-2.mimecast.com
Diagnostic-Code: smtp; 550 Local CT IP Reputation Policy (Reject) -
https://community.mimecast.com/docs/DOC-1369#550
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kentn
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response 31 of 223:
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Dec 24 03:52 UTC 2016 |
Yahoo tends to bounce e-mails, maybe other ISPs. You can thank all
the idiots who send spam from Grex or imitate Grex users when they
send their spam from other places.
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jhesse
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response 32 of 223:
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Dec 25 20:31 UTC 2016 |
This is more than just Yahoo. The bounces I'm getting from IEEE and
Slumberland indicate their outsourced MTA doesn't like our ip or something
is misconfigured. (Yahoo's bounce is just kind of broken, like Yahoo in
general)
Is spam from grex a thing? I'm currently getting slammed by up to 200 spams
a day, and all of it is from botnetted residentials or compromised Word Press
installations. Finally had to set up procmail, after twenty years.
(Thank you for having procmail here. Saves a lot of wear on the "d" key...)
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kentn
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response 33 of 223:
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Dec 26 04:23 UTC 2016 |
You can run spamassassin and get rid of most of the spam. We've had
users sending thousands of spam e-mails from Grex to other sites and
we usually lock their accounts. But, some outside spammers spoof our
user addresses and it looks to other sites like Grex is sending the
e-mail when it is not.
procmail also helps get rid of spam, as you note.
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keesan
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response 34 of 223:
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Jan 11 14:50 UTC 2017 |
I did not see a Winter 2017 System Problems.
Grex is currently on the Barracuda Reputations spam list. I first learned
about this list yesterday when it also blocked SDF outgoing mail. I use grex
to send mail to Yahoo when SDF is on the yahoo list. Grex appears not to be
on the Yahoo list. An administrator should fill out a block removal form for
Barracuda. Maybe they changed criteria recently.
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belial
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response 35 of 223:
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Jan 16 18:13 UTC 2017 |
Cross. there is user named" imabot or imamachine [dont remmber as i cant open
second window t ochek. he is running some kind of botnet. just check his home
directory and process that he is running
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nharmon
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response 36 of 223:
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Jan 16 21:09 UTC 2017 |
Looks like several instances of a TCP forwarder running under user imarobot,
which may be owned by user huuygt77.
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cross
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response 37 of 223:
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Jan 21 01:28 UTC 2017 |
Hmm; doesn't seem to be running anymore. Is it doing something to harm the
system?
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kentn
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response 38 of 223:
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Jan 21 02:26 UTC 2017 |
He's running socat from his home directory. As we don't want people running
bots and bouncers, he shouldn't be doing that. When he is running his little
network he's using a lot more processes than the normal user, too. I'm not
sure what he's trying to accomplish other than using resources.
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cross
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response 39 of 223:
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Jan 21 08:19 UTC 2017 |
Sure, he's using slots in the process table; but is there any realized effect
on grex? If not, I don't see the harm.
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papa
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response 40 of 223:
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Jan 30 18:33 UTC 2017 |
`change` program menu choice C (Cflist) fails with the following messages:
".cflist" builder program version 1.0 written by "nt"
File "public.txt" doesn't exist
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papa
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response 41 of 223:
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Jan 30 23:05 UTC 2017 |
(Repeating post from agorage conference.)
Is this the appropriate place to request a new Perl module from CPAN be
installed on Grex?
If so, would it be possible to install Text::WikiCreole? It's for converting
wiki-style markup to HTML. I'd like to play with it to build a wiki-like,
but
statically-generated with no CGI, site in my web page here.
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