I don't know what happened but sendmail suddenly stopped authenticate my users who tries to send mail.
I use slackware 13.0 and sendmail for SMTP with ssl and plain authentication. Imapd works fine.
There is nothing in logs just that the client did not issue MAIL/EXPN/VRFY/ETRN during connection.
Im using linux (Suse 11.1) on my laptop in my new job, however I need to set up my accounts and any account to authenticate using the existing windows ADC server.
What do i need to do precisely. I have kerberos & Samba installed. Do i need both of them or can I just go ahead and set up one.
I am wondering how websites like banks are able to determine if you have previously used a certain computer to access the website, even if your router's IP address may have changed and your system's cookies have been cleared. I have users that need to access our HTTP intranet from outside locations. Those locations will have dynamic IP addresses most of the time, so I can't just "allow from [ip]" in my Apache proxy configuration. Originally we considered a VPN, but determined that a VPN will be overkill to access just an internal website, since we do not want external users to have permission to the rest of the network, only the website.I currently have it working over HTTPS with basic authentication against an internal LDAP server, but I want a little more security for such an important website.
crappy diagram:
[user]-->(internet via https)-->[apache gateway]-->(intranet)-->[http server]
Friends is there some way to authenticate Microsoft windows users from openldap running on CentOS. I will be very thankful if you provide me step by step procedure.
View 1 Replies View RelatedHow to prevent a user sending a mail to a particular user in an intranet mail server?I tried with /etc/mail/access file but could not.
View 4 Replies View RelatedI am having Sendmail ver 8.13.1 installed on CentOS 4.5. Recently we have noticed that some emails are not getting delivered to user. Mailserver is receiving emails and they are getting processed but not getting delivered to user.
I have checked mail log and in the log it shows that email has been delivered to user below is log for reference
For a project that I have been assigned to, I need to send emails to a business partner(business_partner.com) from one production server. However, my emails neither reach their destination nor bounce back to me.
Working with our business partner's IT support, the following error was discovered in their maillogs:
Quote:
Further analysis by my IT support shows that emails are successfully sent out ("Message accepted for delivery"):
Quote:
The app I coded is not using a public internet email address (e.g. me@hidden_domain_name.com) to send these notifications.
Instead, it uses an intranet email address (the server's where my code resides: user_name@servername.hidden_domain_name.com).
We created an alias but it made no change. Would adding my public internet email address to "trusted-users" file (we use sendmail)
I have a problem with sendmail. I am using the zen.spamhaus.org dnsbl, and it is doing a wonderful job of blocking incoming spam from open relays. But it is blocking my users who are on a dynamic ip range from any isp remotely. They should be able to authenticate and send messages no matter where they are as long as they authenticate right? I just want to use the blacklist to block incoming mail to my server that is being distributed to our email addresses.
I want to block people that are hosting mail servers and sending mail to my domain from isp sub-nets. But I don't want to block my users that are sitting on isp subnets using their mail client to authenticate over smtp and send an email from my mail servers.
The problem is to make sendmail use different LDA for diferent users in the same domain. For example, deliver bob@some.domain with procmail and genry@some.domain with mail.local.
View 1 Replies View RelatedHow to restrict some uses to send mail to outside domains except local in sendmail.I am using ( CentOS5 + Sendmail )
View 2 Replies View RelatedWell I want my sendmail to pipe all users' incoming emails to /dev/null ... I just don't want to accept emails. Every user that exist on the system currently or will be made in future, I want their incoming emails to them to be piped to /dev/null .... I just want those users to be able to send emails.
View 1 Replies View RelatedThe company I work for, as usual, is Microsoft-centric. I'm attempting to integrate my Ubuntu server into the domain to allow domain users to authenticate to the server and access file shares using Samba. Here's my current configuration:
[Code].....
This happened during the bump from 1.1.4 to 1.2.0 (in F11), but now nobody can login into the mail server.
The strace of dovecot-auth says that it sends messages over an AF_NETLINK socket before failing. Why in the world would it do that?
I installed a few media servers to stream something to my PS3 over the weekend, but now when trying to shutdown the computer, I'm asked to authenticate with a password since other users are still logged in. I installed quite a few programs over the weekend trying to get it to work, so I can't remove a specific one. Is there a way to see which daemons are logged in under a different session? Found it. It turned out to be mythtv.
View 3 Replies View RelatedI use Ubuntu in my office NIS environment and I can't upgrade the whole network to LDAP right. I upgraded to 10.04 recently and reinstalled the NIS client and associated packages, among other things.
I have set up my /etc/nsswitch.conf file so that passwd, group and shadow all have "files nis", I'm bound to the correct NIS domain and I can do "ypcat -k passwd" or "ypcat -k hosts" just fine.
Problem is that I can't log on or su to any NIS user, I just get "authentication failure". I've tried the same usernames and passwords on Red Hat NIS clients on the same domain and they work fine.
is it possible to authenticate users logins by a database (postgres, mysql)?for instance: -user types username, pasword, at login screen -OS then connects to server with database and checks if the user is valid. if so, is it feasible to add a time lock function for each user? in the sql, postgres table ? for instance user sandra can only log onto the computer for 1hr at 5pm
View 7 Replies View Relatedis there any solution for authentication of ethernet users.something similar to daloradius for wifi.I dont want to use pppoe. is there any way to connect daloradius with dhcp server, so when certain mac address asks for IP first daloradius will look if it is allowed.
View 11 Replies View RelatedWe are testing the possibility to migrate from winXP to SLED 11 SP1. We have solved integration login and single sign on. But now we have the problem that we are not able to authenticate users against eDirectory. The test enviroment is SLED 11 SP1 workstation with authentication method eDirectory LDAP, default software + Novell client from installation disk + yast2-lum + yast2-linux-user-management
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I've got a Samba server (CentOS)(I swear all my non-work boxes are Ubuntu) that has been working fine in our Active Directory environment for a long time, now that Windows 7 has been forced upon us, we've noticed that Win 7 users aren't able to authenticate to this server unless they access it using the IP address, e.g. \192.168.1.22. We've tried the different Windows 7 registry hacks and nothing makes a difference. We were advised to update Samba and we did to 3.3.8. However, this being a virtual machine, upgrading a clone of this machine did work, the configuration was identical, except the hostname
View 9 Replies View RelatedI have running on RHL enterprise 4. I want to configure squid users to authenticate against windows 2003 active directory. How do I go about from scratch
View 1 Replies View RelatedI am using webmin for my daily tasks. I have fedora 13, whenever I click on ''Sendmail M4 Configuration'' or Outgoing Addresses (generics)'' I get the following error message
Quote:
The Sendmail M4 configuration base directory /usr/share/sendmail-cf was not found on your system, or is not the correct directory. Maybe it has not been installed (common for packaged installs of Sendmail), or the module config is incorrect. I read documentation at sendmail.org, it seems that structure of directories for send mail has been changed in version sendmail-8.1.4 shipped with FC13. In webmin config module we have
Quote:
Sendmail M4 base directory = /usr/share/sendmail-cf
which is not there. I did a locate / sendmail-cf on the command line, it finds nothing
We are running CentOS 5.4 x86 on ESX 4 Server. We have a busy Help Desk, a Forum and several name-based websites running. Weve been using CentOS for this 'purpose for several years (different versions) and so far we have never had a problem. On Saturday, I applied all the latest updates including the Kernel updates. I rebooted the server and all seemed well until Sunday morning when I didn't get my Logwatch in the mail. Then I got a telephone call from a customer asking me why I hadn't responded to a Trouble Ticket he had created on Saturday afternoon (creating a TT sends an email via sendmail to all the support staff). I did a few tests and sendmail has just stopped working. The Logwatch had been created and had been sent to root, but all mail for root is redirected to my Mail Server on e different box (GroupWise). There was nothing wrong with the mail server, but sendmail has just stopped.
Fortunately I had created a snapshot before I applied the updates, so I reverted back to the snapshot and mail started working again, but I lost 2 days info because I had run the backup before I applied the patches. Now I see there are 132 Updates available, but there is obviously a problem somewhere in there!
Can connect to our mail server using telnet onto port 25 and this works correctly, 'ehlo whatever' shows output as expected.
However using a mail client to connect it gives an authentication error and the following appears in the maillog file;
did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA
what to look for in the config, this works correctly on our development box but not on our production server. Could it be another program is interfering with the connection?
Sendmail is running in standalone mode not through the xinetd daemon.
I am using the PLAIN AUTH method as to try and avoid getting more errors.
I recently modified sendmail.cf to use a third party SMTP server to send emails. It works great. But when I run sendmail from the command line, I have to specify the -C flag and force feed it the location of my sendmail.cf, or else it doesn't work.
So in other words, the following works great:
However, if I don't specify the -C flag, sendmail doesn't consider what's in the sendmail.cf and barfs:
I don't run sendmail as a daemon. I'm only using it to send emails. I know my modifications of sendmail.cf are correct because it works perfectly when I use the -C flag. I searched my disk to see if I could find another sendmail.cf on the machine and only the one in /etc/mail came up.
Why sendmail is not reading my sendmail.cf?
I'm running Sendmail version 8.14.2 on Fedora Core 8.
I have the following problem and tried (almost) anything to fix it but without a full success.
We're running a server with CentOS 5.4. Every night a logwatch report is send. These mails are rejected by our mailserver because some invalid details. These mails are send to local user root which is redirected to another external mail address with /etc/aliases.
At first the mail was send from root@localhost.localdomain to root@localhost.localdomain. As you can imagine, our mailserver rejected this because the localhost.localdomain parts. So I changed the sendmail config with these options:
Code:
dnl EXPOSED_USER(`root')dnl
FEATURE(masquerade_envelope)
MASQUERADE_AS(`domainA.com')
MASQUERADE_DOMAIN(`localhost.localdomain')
MASQUERADE_DOMAIN(`slave02.domainA.com')
This solved my problem partially: Mail is now coming from root@domainA.com (which is OK), but is send to root@slave02.domainA.com (slave02 is the local hostname), which is not OK. I tried everything I could find to change that last part to, but nothing seems to work.
I want to know is it possible in Sendmail to restrict some users from sending / receiving mail to / from outside world i.e. they should be able to send and receive mails only from local domain.
View 4 Replies View RelatedI'm going crazy with this one. For whatever reason, sendmail will not authorize any users. I've tried multiple logins (all with good credentials) but still get login fail, ie (FYI this is a sendmail/MailScanner setup if it makes any difference):
220 hostname.net ESMTP Sendmail 8.13.8/8.13.8; Fri, 19 Nov 2010 12:07:08 -0600
ehlo hostname.net
250-hostname.net Hello testdomain.com [123.123.123.123], pleased to meet you
[code]....
So far, I've been able to get my Box (Centos 5.3) authenticate users through LDAP. My next plan was to automount their home directory from our NAS device.But I'm struggling getting autofs talking to the LDAP Server.My Config Files:
/etc/ldap.conf
[root@tmplt_CentOS-5 ~]# egrep -v '^#|^$?' /etc/ldap.conf
base ou=intern,o=zde,dc=simiangroup,dc=com
[code]....
I found 2 previous posts, one from 2005 and one from 2006. The 2005 post was not very helpful and the 2006 threads are not exactly what I was expecting. So I wanted to ask the question to be sure. I have already stood up the new fedora 12 server. The old server is also fedora 12. I need to migrate local users and sendmail mailboxes. In the past couple of years the environment was small enough to create a copy of the users and then have the users mail themselves, but I want to start migrating users/mailboxes properly.
On a unix level I am a jr admin, but I have extensive senior level experience as a windows engineer and network engineer. I do feel comfortable with using the unix command line, but usually operate the unix systems thru webmin because I am not familular with more complex commands. Ideally a software solution to migrate users and/or mailboxes from one server to another is what I am looking for, but in leiu of a software solution I still need to migrate user accounts and their mailboxes. LDAP is not in place, but if the process becomes easier with LDAP I am willing to do what is needed to set up LDAP. (I have no previous experience setting up LDAP)
I do not want to change my mail server from sendmail to different software. At least right now. Both systems are up and running. They can connect to each other via public ipv4 address' only. The new server has already been installed and configured with all the software to match the old server. How do I migrate users and sendmail mailboxes from one fedora 12 server to another fedora 12 server?
After upgrading from a working 9.10 system to 10.04 Postfix has stopped delivery email to users. Sending email is fine and IMAP(s) and POP are working fine but receiving messages now get the follwing message
postfix/pipe[14331]: 65B941B61F0: to=<me@fred.com>, relay=dovecot, delay=1081, delays=1081/0.02/0/0.1, dsn=4.3.0, status=deferred (temporary failure) Using Postfix with Dovecot, MySQL & Amavis plus spamassasin
Does anyone have any idea what the upgrade process may of changed in the upgrade none of the conf file were replaced during the upgrade and only one parameter caused a issue for Dovecot after the upgrade "ssl_disable = no" after disabling this dovecot started