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Grex > Agora56 > #4: Grex System Problems - Winter 2005/06 | |
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| Author |
Message |
| 25 new of 260 responses total. |
kingjon
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response 88 of 260:
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Jan 8 18:35 UTC 2006 |
Surely he was on for enough time for that? Try the "last [user]" command to see
how long he was on.
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kingjon
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response 89 of 260:
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Jan 8 18:35 UTC 2006 |
Er, "perhaps" rather than "surely."
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aruba
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response 90 of 260:
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Jan 8 18:52 UTC 2006 |
Well, in this case, he would have had to be on for 17 days straight, which
seems unlikely. So I hecked last as you suggest, and in fact the user in
question was logged on for only 23 minutes on Dec 21, and hasn't been on
since.
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kingjon
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response 91 of 260:
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Jan 8 19:37 UTC 2006 |
I just checked, and "last" can be fooled -- I su'ed into my own account, and it
only caught the outer process, not the inner one. There's probably other ways,
too.
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twenex
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response 92 of 260:
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Jan 8 20:10 UTC 2006 |
Did you "su -"? Last checks logins, not processes. "Su -" logs you in (again),
whereas "su" only starts another process with superuser processes.
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twenex
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response 93 of 260:
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Jan 8 20:10 UTC 2006 |
Er, superuser PRIVILEGES.
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kingjon
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response 94 of 260:
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Jan 8 20:21 UTC 2006 |
"Su" logs you in (so to speak; you're right that it akes "su -" to create a
login process) as whoever you specify, provided you know the password. (If you
don't specify, it assumes the superuser.)
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glenda
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response 95 of 260:
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Jan 8 21:22 UTC 2006 |
Last does not register your login when you login via backtalk.
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mcnally
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response 96 of 260:
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Jan 8 21:31 UTC 2006 |
Yes, but it's hard to read your mail via Backtalk.
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bhoward
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response 97 of 260:
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Jan 9 00:01 UTC 2006 |
It appears if you log in with a non-interactive shell, for example:
"ssh grex.org bash -i"
no login record is made.
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keesan
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response 98 of 260:
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Jan 9 01:31 UTC 2006 |
Can anyone figure out why sdf just stopped working a few minutes ago?
I can't even access the website. I sent a mail, then could not send the next
one, then could not read mails, then could not ssh back in. Is this a crash?
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bhoward
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response 99 of 260:
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Jan 9 05:57 UTC 2006 |
Could be a network outage but I suspect a machine crash or a network
break somewhere relatively close to them. The traceroute from where
I am in Tokyo is fairly long but dies a few hops into att.net's
network.
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keesan
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response 100 of 260:
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Jan 9 06:26 UTC 2006 |
It works again, thanks.
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cross
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response 101 of 260:
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Jan 9 14:23 UTC 2006 |
This response has been erased.
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aruba
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response 102 of 260:
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Jan 10 02:47 UTC 2006 |
Thanks, Bruce and Dan. So if I understand correctly, I should trust the
"mail last read" time, but not the "last login" time. Is that correct?
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davel
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response 103 of 260:
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Jan 10 03:02 UTC 2006 |
I wouldn't trust that very far. I forget which time that is - I sort of think
the mtime, but it's been a few years since I really knew - but in any case
MTAs & MUAs touch the relevant times (for when mail was last received & last
read) in somewhat counterintuitive ways, and a simple touch can also change
them. Not to mention updating or accessing mail with something other than
an MTA or MUA.
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aruba
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response 104 of 260:
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Jan 10 03:47 UTC 2006 |
Hmmm. Well, is there any reliable way to tell when someone last looked at
their mail?
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gull
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response 105 of 260:
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Jan 10 04:07 UTC 2006 |
Re resp:103: For example, many systems have a 'from' command that will
list out the header information for your mailbox in a concise format.
I used to use it in my .profile as a sort of mail preview.
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cross
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response 106 of 260:
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Jan 10 04:46 UTC 2006 |
This response has been erased.
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keesan
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response 107 of 260:
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Jan 10 18:12 UTC 2006 |
I was dialed in and suddenly Pine stopped letting me do anything and a series
of connect 115200 lines started appearing on my screen, so I hung up and tried
to dial again and could not connect. Would someone else please check the grex
modem connection? Bill at Kiwanis says he is testing the 33.6K modem bank
for a week or two of continual file transfer to weed out the bad ones. He
could not find a way to upgrade to 56K. But they work otherwise and we should
soon have a LOT of replacements (20?).
It is not my modem, I am now connected via an 'ISP' (TCP/IP).
Half an hour ago the fuse to my living room North blew at my apartment while
I was dialing grex, but that can't have affected the grex modems.
Anyone know how to make the replacement fuse work? Do I need to clean out
corrosion before replacing it? The basement is rather damp where the boxes
are, just above the laundry tub.
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slynne
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response 108 of 260:
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Jan 10 21:56 UTC 2006 |
I had that same problem with fuses so I had an electrician come and
install circuit breakers.
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rcurl
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response 109 of 260:
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Jan 11 05:31 UTC 2006 |
It would be desirable to brush off corrosion on the fuse clips. Of course,
you DO want to turn off the main power for removing and replacing a fuse
(presuming it is a cartridge fuse).
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rcurl
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response 110 of 260:
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Jan 11 17:31 UTC 2006 |
How is this to be interpreted? That is, where did the block occur and why?
Is this a case of att.net blocking mail from grex because of too much spam
originating here?
From: Mail Delivery System <Mailer-Daemon@cyberspace.org>
To: rcurl@cyberspace.org
Subject: Mail delivery failed: returning message to sender
This message was created automatically by mail delivery software.
A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:
brodovich@att.net
(generated from mnacbrd@cyberspace.org)
SMTP error from remote mail server after MAIL
FROM:<rcurl@cyberspace.org> SIZE=2234:
host gateway1.att.net [204.127.134.23]: 550-216.86.77.194 blocked by
blacklist.mail.ops.worldnet.att.net.
550 Blocked for abuse. See
http://www.att.net/general-info/rblinquiry.html
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mcnally
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response 111 of 260:
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Jan 11 17:57 UTC 2006 |
Yes, it's clear from that bounce message that att.net is blocking
email from Grex due to spam issues.
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rcurl
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response 112 of 260:
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Jan 11 18:38 UTC 2006 |
What is being done about this? Will it be done soon enough so that mnacbrd
doesn't have to find a new server? (It is a charitable non-profit that is
a Grex member as mnac.)
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