Displaying 20 results from an estimated 4000 matches similar to: "question for those who run mail servers"
2012 Feb 17
1
smartd and smartctl
A few weeks ago, one of my servers started complaining, via smartd, that
one drive had one unreadable sector. I umounted it, and ran an fsck -c,
then remounted it. Error didn't go away. Now, what's really annoying is
that I've gotten back to it today, and it's reporting the problem, as it
has for weeks now, every half an hour.
However, when I run
> smartctl -q errorsonly -H -l
2012 May 02
1
DKIM Pass - Fail
Hi Dear Community Friends,
it is few days now, i am trying to figure out why DKIM is working / not
working. Any assistance would be very much appreciable.
Server IP is not blacklisted ever, MX, PTR SPF, DKIM records are available
in DNS. why it is working at Gmail, why failing at Yahoo?
Gmail
dkim=pass header.i=@digital-infotech.net
Yahoo:
domainkeys=neutral (no sig);
2010 Dec 08
1
dhcp + static dns
Hi all,
Not having issues setting this in Ubuntu or Windows but I cannot seem
to add a static DNS or search path without it getting over written
when networks restarts.
The file dhclient.conf seems ignored.
I would like to simply have a fixed DNS and search path added to what
ever was found by the dhcp client.
So I don't think peersdns=no is an option.
Any advice is greatly
2010 Dec 28
3
Hello
Hello I need a clean link for a Cent us download please I don't want to risk any virus'.
Thank you kindly for such a wonderful program!
2011 Nov 18
2
ip command
Hi all,
I have this network:
10.1.20.0 - 10.1.23.0 /22
Broadcast 10.1.23.255
Say I have a machine with IP: 192.168.1.1
Now, I want to create virtual IP on it with ip command:
1. Is this ok?
ip addr add 10.1.22.100/22 dev eth0:1
2. Should I define the broadcast too in the above command?
If I don't define it, will the above command means the broadcast would
be 10.1.25.255?
Thank you.
Fajar.
2011 Nov 16
2
Where is source address info of a route kept?
I have an ethernet device in my lan with a primary address 192.168.5.205
and a secondary address .217. I added the secondary address after network
startup established the primary address by an ip addr add command:
# ip addr add 192.168.5.217/24 broadcast 192.168.5.255 dev eth0
# ip addr show
...
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
link/ether
2012 Apr 10
3
Removing LVM
I have a CentOS 5 machine in which I'm trying to remove lvm. I dd'ed the
file system to another partition, then dd'ed it back overwriting the lvm
partition. I then modified menu.lst and fstab and replaced the paths to
point to the correct device.
When the system boots it's still looking for lvm. I can restore the
system back to where it was with lvm, but I'm not sure what
2011 Jan 05
3
cron jobs fail to run
hey centos
long time no hear! :) I'm having a small issue where the backup jobs
that I set to run in the crontab of the backup user do not appear to
be running. Here's how I set it up (with crontab -e as the backup
user):
run amanda every night (check at 2:45 and backup at 3)
45 2 * * * /usr/sbin/amcheck /var/log/amanda/crontab/amcheck.log
* 3 * * * /usr/sbin/amdump
2012 Mar 09
2
Running processes
Hello,
I was wondering if anyone could tell me why so many processes are started on
my system? Here is a list of them. I am trying to figure out why they are
running and if I can stop them. Thnx.
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 2 0.0 0.0 0 0 ? S< 19:33 0:00 [migration/0]
root 3 0.0 0.0 0 0 ? SN 19:33 0:00 [ksoftirqd/0]
2013 May 02
1
Tuning!
Hi Buddies,
I have 2 servers running dovecot + postfix for pop/imap users.
The users mailbox are in a Nfs storage.
The load of server is ranging at 3.0 to 15.0.
I really dont know what happened.. I read a lot about tuning of dovecot,
and the changes are applied, how you can see.
The Hardware of server is really good!
The host have 8GB of mem and 2 sockets with 2 cores anyone.
The server receives
2012 Feb 02
10
postfix - reject of incoming mail due to helo check??
Hi list,
I have been getting the following types of log messages
Jan 30 08:22:33 ndgonline postfix/smtpd[30538]: NOQUEUE: reject: RCPT
from unknown[71.46.229.50]: 450 4.7.1 Client host rejected: cannot find
your hostname, [71.46.229.50]; from=<DWoodman at orangebankfl.com>
to=<rkampen at ndgonline.net> proto=ESMTP helo=<mail.floridianbank.com>
a rdns check shows all is well
2016 Jan 07
3
Helo Checks not always working?
All i have is :
smtpd_client_restrictions = permit_mynetworks, permit_sasl_authenticated
I disabled the unknown restriction due to lots of customers of me are missing PTR records, which needs to be set bij the internet provider.
So they got blocked, i had to remove these.
The Helo check is often on the IT department can adjust them selfs.
And most spammers have incorrect helo’s
2012 Apr 18
2
RoR - Search Forms with Checkboxes, display appropriate results
I have a form that allows me to search a hotel by city or name and by
rating through radio buttons. It all works.
However, my hotel model has_one :facility, this facility model is
composed by several boolean fields (for example, roomservice:boolean
restaurant:boolean and so on)
The question is, I want to add checkbox fields for each facility I have
and in the search form, when the user selects
2006 Jul 25
6
form and pagination question
Hello,
How do I get params from a form to use with a paginator?
debug(params) shows this
city: !map:HashWithIndifferentAccess
id: "1"
but in my controller, when I try to use
@hotel_pages = Paginator.new self, Hotel.count(:conditions =>
"hotels.city_id = params[:city][:id]"), 3, @params[''page'']
it doesn''t work. I suppose it''s a simple
2007 Jul 31
3
country listbox from table
sorry again,
i''m building a registration form, getting stumped on the country
listbox.
any ideas how i could build a listbox for countries, taking it''s content
from a data table?
i''d imagine i''d have to generate a data model for country, fill it in
with all the current ISO spec countries; that i can do.
then tie that data model to the account controller.
2007 Mar 23
0
[LLVMdev] June 2007 LLVM Developer's Meeting
For those of you coming from out of the area and who may not be
familiar with the bay area.
TRAVEL:
The closest airport is San Jose International Airport (SJC; 10 miles
away). There is also San Francisco Internation Airport (SFO; 43 miles
away) or Oakland (OAK; 49 miles away). IMHO, I would choose SJC, then
SFO, and lastly OAK, depending upont he prices.
HOTELS:
The Cypress Hotel
2006 Jun 29
4
Multiple belongs_to
Let''s say I have a catalog with hotels. Each hotel belongs to a
category (4-star, 5-star etc.) This is it''s official category.However,
there is also a category that users assign and a category that
"independent reviewers" assign. So I have this:
hotels {
id,
category_id,
reviewer_category,
user_category
}
categories {
id,
name
}
class Hotel <
2010 Feb 02
2
Internet access not working on CentOS but on Windows when travelling
Hello,
I'm currently travelling (in south-eastern Europe) with a netbook
(Samsung NC 10) running CentOS 5.4 i386.
I frequently try to access internet from bars or hotels (mostly via wireless).
Although it works pretty often, it happens quite regularly that in
some hotels I cannot access internet from CentOS while it is possible
from Windows.
This is the case in the hotel where I am currently
2007 Mar 23
7
[LLVMdev] June 2007 LLVM Developer's Meeting
All,
This message contains important information about the June 2007 LLVM
Developer's Meeting. If you plan to go (or even if you don't), please
read it carefully. Nothing is set in stone yet so if you have a
suggestion, please make it! Your feedback is wanted.
Thank you to all who participated in the Conference Poll we held at the
end of last year. It let us know your preferences and
2020 Jun 07
3
Postfix restrictions
Hi,
I'm currently fine-tuning my mail server (Postfix and Dovecot on CentOS 7).
SPF, DKIM and DMARC work fine, now I'd like to limit the spam tsunami.
Besides the official Postfix documentation, I've read a few articles about
Postfix spam restrictions, namely these :
https://www.linuxbabe.com/mail-server/block-email-spam-postfix
https://wiki.centos.org/HowTos/postfix_restrictions