Server :: Setup Reverse Dns Check In Postfix ( CENTOS 5 )?
Nov 4, 2009How can I setup "reverse dns check" option in Postfix ?
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Server :: PHP And Sendmail With External Mail Server / Failed Reverse DNS Check?
Jun 7, 2010After searching the forum I could not find a clear answer to my question so I am giving it a try...
I have installed a LAMP server with Postfix as mail server. The scripts send email as user www-data using the mail server on the same machine.
However, the email got rejected by external mail servers (failed reverse DNS check) so I setup a mail server that meets all needed requirements.
Now I would like to use this second server instead of the mail server on the LAMP server. I found that this could be done with changing sendmail settings in php.ini (I think).
However I am not sure how that will go: www-data is no actual user on the new email server (which requires authentication before sending). Do I need to create a new user on the email server or change the settings in php.ini to match an existing user?
Software :: Setup A Mail Server - Virtual Users With Postfix - PostfixAdmin - Courier - Mailscanner - ClamAV On CentOS 5.5
Dec 26, 2010I am trying to set up a Mail Server -- Virtual Users with Postfix, PostfixAdmin, Courier, Mailscanner, ClamAV On CentOS 5.5 using this guide. These are the version and softwares I have used till now:-
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Server :: How To Setup Reverse Proxyapache2
Apr 16, 2010I have a scenario. A domain [URL] then there are 4 private computers on which applications are hosted at port 80. So when some one from outside access the site it should look as [URL] in apache2.conf where [URL] is hosted I added
Code:
ProxyPass /site1 http://192.168.0.2
ProxyReversePass /site1 http://192.168.0.2
is it correct ? I am able to see [URL] but when some one logs in from internet to [URL] it is redirecting to www.mydomain.com and not taking to page where a successful login will go
in [URL]what should I check or do ?
Server :: Setup Reverse Proxy With Proxy_mod To Port 443 On IIS Server
Aug 30, 2010We currently have a SUSE Apache2 reverse proxy server setup to reverse proxy (proxy_mod) our GroupWise Web Access server. Our SUSE box is located at www.domain.com. Our GroupWise Web Access server is located internally and is called GWMail. We are in the process of migrating from Novell to Windows, so we will have an exchange server with OWA access running on a Windows Server 2008 IIS7 box. That one will be called EXMail internally. Right now when someone goes to www.domain.com/gw/webacc it goes to the GWMail internal server from the outside world. This was all set up by previous techs who used Linux more.
We would like to set up reverse proxy to be able to reverse proxy to the Exchange Server from the outside world. Unfortunately the snag we are running into is that Exchange needs to run on port 443, and forwarding to port 443 has been a little tricky. I've read elsewhere we need to implement a generic TCP proxy, such as IPtables. what we need to do to get our SUSU Apache2 server to be able to reverse proxy to our Exchange server on port 443. For the save of argument lets call our SUSE server ExtranetServer. Below is our default-configuration.conf file's configuration:
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CentOS 5 :: Postfix Mail Server Will Not Start Tried To Change Postfix Smtp Port?
Oct 4, 2010so i set out to change the default smtp port the server uses because my ISP blocks port 25 and i need the email to work in outlook. this morning i could receive email, but not send it. so i did some research and thought that i needed to edit the master.cf file in /etc/postfix/ by commenting out this line: smtp inet n - n - - smtpd -oand replace it with587 inet n - n - - smtpd (587 being the port i want to use)somewhere along the lines postfix server stopped running and now i cannot get it to start.if i try using SSH it crashes immediately and if i restart it in simple control panel nothing happens
View 7 Replies View RelatedServer :: Postfix DNS: Why Does It Not Check Hosts File
Mar 22, 2011I run a few virtual servers at home behind a NAT, including an e-mail server, with dynamically updated dns records pointing to each of the servers. Consequently, I suffer from the loopback problem when working with these servers from my desktop PC. (E.g., I ping one of the dns hostnames and the ping goes to my router instead of the server). I fixed this problem by manually adding the in-home IP addresses and name pairs to my /etc/hosts, and then setting /etc/host.conf to a "hosts, bind" order.
This seems to work for every application on my desktop except for one: the postfix installation on my desktop PC (used for mailing smartctl messages and so forth) cannot communicate with my in-home e-mail server (times out). I checked the logs, and it looks like it is trying to use the IP address from the actual A-RECORD, rather than the address in my hosts file.
So I'm not quite sure what to do. There seems to be a "proxy_interfaces" parameter in main.conf which might be relevant, but I think it only deals with received mail. I'd prefer to have the mail going to that e-mail server, rather than also having to check the spool on my local desktop accounts.
CentOS 5 :: Setup Spamassassin With Postfix And Procmail?
Nov 17, 2010I have Centos 5.5 and using Postfix, procmail and Dovecot for sending and receiving emails. I have spamassassin installed too but not configured. I am getting lots of spams. I googled a lot to find if there is any configuration but I couldn't find.how to setup spamassassin to filter emails for spams.
View 1 Replies View RelatedUbuntu :: Reverse Proxy Setup - Pass Multiple Domains Thruough One Server To Various Hosts On Local Network
Apr 13, 2011I'm trying to pass multiple dpmains thru one ubuntu server to various hosts on my local network.
[url] should be sent to the /var/www folder on the local host.
[url] should be forwarded to an IIS box on my local network (owa.nunya.local)
[url] should be sent to another ubunto box on my local network (smtp.biznet.net)
I have tried placing VirtualHost entries in /etc/apache2/sites-available/default and [url]and [url] both work but [url] gets forwarded to the c:inetpub folder on the IIS box.
Software :: Setup Postfix As Null Client (CentOS)?
Apr 12, 2010I setup postfix as a null client on my VPS to send only automated, outbound emails. I also have Google App mail for the domain (for sending receiving personalized emails), however, I receive the following in Gmail for emails sent by from Postfix. The destination email address are correct (tried a few of my personal email addresses). I once got Postfix to work, but no longer the case.
host ASPMX.L.GOOGLE.com[209.85.223.16] said:
550-5.1.1 The email account that you tried to reach does not exist. Please
try 550-5.1.1 double-checking the recipient's email address for typos or
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CentOS 5 Server :: 5.6 - Reverse Proxy With SSL
Aug 24, 2011I've been struggling with this for a couple of days now. I'm trying to setup a reverse proxy with SSL. The config works when it's not using SSL, but as soon as I setup the virtualhost for 443, I get a ERR_CONNECTION_REFUSED in my browser.
The setup is that it's a CentOS 5.6 running Apache 2.2.3. I was configuring it via this guide: [URL]
This server is acting as a reverse proxy for a Windows server running Apache. Currently, I'm just trying to get the manager page from the Windows server to go through the reverse proxy. Here's the virtual host section of my httpd.conf file on the reverse proxy:
<VirtualHost *:443>
ServerName aspwebview.vtinfo.com
SSLEngine On
SSLCertificateFile /etc/httpd/ssl/star_vtinfo.com.crt
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Thoughts? Is there anything I have to do on the Windows server (maybe in the connector section of server.xml)?
CentOS 5 :: Setup A Box With Apache, PHP, MySQL And IRedMail (Postfix/Dovecot)?
Jul 26, 2010For 3 days now I've been trying to setup a CentOS box with Apache, PHP, MySQL and iRedMail (Postfix/Dovecot) Everything is great apart from Apache, which is returning 403 errors: "You don't have permission to access / on this server.". The apache error_log file says: "[Mon Jul 26 14:02:32 2010] [error] [client x.x.x.x] (13)Permission denied: access to / denied" (I've blanked out my IP). I have no idea what's happening here. Apache works fine until I add my VirtualHost which is:
<VirtualHost mydomainname.com>
DocumentRoot "/home/myuser/public_html"
<Directory "/home/myuser/public_html">
allow from all
Options +Indexes
RewriteEngine On
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Server :: Configure Postfix In Order To Check Spam Only For Outgoing Email?
May 8, 2009It's possible to configure Postfix in order to check spam only for outgoing email?
View 2 Replies View RelatedServer :: Bind Reverse Zone : No Name With Reverse Lookup
Oct 12, 2009I am using RHEL5. These are my config files:
Code:
options {
listen-on port 53 { 127.0.0.1; 192.168.14.54; };
listen-on-v6 port 53 { ::1; };
directory "/var/named";
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Ubuntu :: How To Setup 10.04 Server + Postfix?
Jun 28, 2011just followed the guide on how to setup Ubuntu 10.04 server + postfix from here: [URL]..ports 110, 143, 25 are forwarded on my router to LAN IP of mailserver.
postfix settings
hostname: server1.mydomain.com
example email: user@mydomain.com
I can receive emails in outlook, if they were sent from the mailserver using: mailx user@mydomain.com
However, external emails from hotmail.com to user@mydomain.com never arrive. I'm thinking this is because of the DNS host records for my domain. Here's what I have.
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Server :: Postfix / Dovecot Help On New Setup
Mar 20, 2011CentOS 5 box was just setup to replace a crashed old one. I have postfix.admin installed and working, added users (confirmed from mysql command line) and can login using telnet server pop3 with the user information. The problem I am left with is just receiving mail. I have both squirrelmail and roundcube installed, and can also authenticate using both (/var/log/maillog shows);From either webclient I can naturally send mail out and both yahoo and gmail client confirms, yet a reply shows nothing, and nothing ever shows in the maillog. Firewall is shut down but I don't know postfix enough to see how to test, or is something else grabbing the mail.
I can provide anything necessary, just let me know what. As I see it (just so far) Postfix should be the server that answers and receives the mail, dovecot is more the pop/imap the client would use, so I think it's a postfix issue. If so, can I turn up the debugging, etc. but again, I think all mail received should appear in the maillog file 1st as I see the outbound mail go fine!
Server :: Postfix+dovecot Closed Community Setup?
May 22, 2010I have a Postfix+Dovecot and virtual users setup taken from here. I've got virtual users authenticating using a password file. But I'd like to lock the service down further, so authenticated users can only email other authenticated users (those listed in the same password file) - so it's a closed community. I don't seem to be able to stop authenticated users mailing outside the community.
View 2 Replies View RelatedServer :: Postfix Setup - Make Own Email Addresses
May 14, 2011It wasn't too long ago that I discovered Linux/Ubuntu (in terms of actually USING it) and I've been completely blown away by the capabilities it puts in the user's hands! To think that someone can take an old desktop from a trash pile (literally, in my case) and turn it into a web server for ZERO dollars is absolutely crazy.
Anyway, I've been using said desktop as a sort of "dummy" machine to learn Linux. I want to be clear that I've got another computer for personal use and that I understand that setting up server software on any computer poses a security risk. Having said that, I have a few questions regarding mail servers and their setup on Ubuntu. Again - I'm comfortable with what I've done so far in Ubuntu (installing packages, terminal interaction, basic usage)
My question is mainly this: if you have, say, a domain name through DynDNS (let's say example123.com) and it points to an Ubuntu system, does something like Postfix enable you to make your own email addresses such as user1@example123.com and have an email server from wherever the Ubuntu system is?
I've been following the basic Postfix setup here and have had success so far (down to the "Adding your local domains to postfix" section) bu wanted to make sure that what I'm intending to do is what I'm doing (haha... i hope that makes sense). That is: get domain name at DynDNS, host pages on LAMPP server, use Postfix to facilitate incoming/outgoing email for that domain name.
Server :: Postfix Setup To Block Spam From / To Own Address
Jun 21, 2011I have set up a couple of postfix servers for my domains, but the only thing I am missing now is this: How to block the public sending mail from my email to my email? I have managed it with SPF, but surely there must be a better way, that returns "relay not allowed" to the client. The SPF method costs too much, since it must make a dns request for each mail. So far, I have not gotten many of these mails, unless when testing my mailserver, but as I see it, anyone should not be allowed to send mail from abuse@mydomain.com to abuse@mydomain.com.
Somebody must have thought about this a long time ago, and there is simply that little line in main.conf that I'm missing.. My setup is this (virtual): I have a primary mx, with postfix, courier IMAP/POP3 server, a user database, and sasl via saslauthd. I also have a secondary mail server (backup mx) with no sasl auth, but with a copy of the mail users in the virtual tables, but added as relay_* users instead.
Spamassassin and SPF testing is replicated too, so most of the stuff should work, but I simply cannot find a setting in Postfix that denies someone to mail FROM my address TO my address. When mailing from my address and out in the open, they are required to authenticate, but not when using one of my my domain addresses, and also targeting my domain addresses.
As said, It is possible with a strict SPF setting, but that is at a cost for every lookup. It would be quicker for postfix to lookup the sender and the recipient in the relay/virtual tables, and deny if both addresses were in the recipient tables, and sender is not authenticated.
Server :: Postfixadmin Documentation - Setup And Administer The Postfix?
Jan 5, 2011I have setup postfix and postfixadmin on a CentOS 5.5 server and the install appears to be ready to go. I have never used postfix and postfixadmin and I am having a hard time finding any documentation on how to setup and administer the postfix server with Postfixadmin. This is simply a test and alerting server and will not be hosting user mailboxes. I am only looking for the basics I am not going to need to setup anything complex
View 1 Replies View RelatedCentOS 5 Server :: Reverse Name Resolution Zone File Didn't Create By Default
Oct 19, 2010I install a Bind 9 with chroot in Centos 5, but the issue is the Reverse Name Resolution Zone File didn't create by default like other zone files, so i look into /var/named directory i don't find the reverse name resolution zone file even if i add this zone on named.conf
zone "1.168.192.in-addr.arpa" IN {
type master;
file "1.168.192.testsip.com.zone";
allow-update { key "rndckey"; };
notify yes;
};
CentOS 5 Server :: Add Reverse DNS On Server?
May 17, 2010I'm burning my lashes out on this and still can't make it happen! I need a pro support.
Problem: I want to add reverse DNS on my server. I allready asked my ISP to add my server ip address (213.13.112.20) and the name of the server: ithkul.medianet.pt
I need the reverse because in these days most of mail servers need to reverse addresses, otherwise you may be considered a mail spammer. I'm using BINd 9.3.6 here is the NAMED.CONF
acl local {
213.13.112.16/28;
};
acl recursionyes { 213.13.112.16/28; };
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Ubuntu Servers :: Setup Postfix Mail Server And Courier-imap/pop
Feb 23, 2010Setup my postfix mail server and courier-imap/pop. My postfix server now is working with tls and saslauthd, I can send/receive email inside my domain as well as outside. However, I need two separate smtp and imap/pop3 server, I mean two machine - one with smtp function and one with imap/pop3 function working together.
View 4 Replies View RelatedSecurity :: Setup Postfix On A Standalone Server Connected Directly To The Internet?
Jul 1, 2010venturing into unfamiliar territory so I'm hoping someone can help me and make things a little more understandable for me. I have setup Postfix on a standalone server connected directly to the internet. I have got inbound and outbound email working for the most part, but I am worried about security.My fear is that if I leave port 25 open to the outside world spammers will find this and start relaying mail through it and eventually blacklisting the IP attached to this box.
For now, I am hosting mail for a single domain and single user (me) with a few aliases. I plan on expanding to IMAP and SMTP access from the outside at some point, but for now I've been using Mutt in a shell and it's fine for my needs for now.
Here are my current Postfix settings:
alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
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Server :: Setup Postfix Header_check Subject That Discard All Emails That Have More Than 6 Words In It?
Sep 8, 2010How would one setup a header_check that would discard all emails that have more than 6 words in it? Such as, if there are more than 6 spaces in the entire message it would be deleted? I cannot find this out but it would reduce my spam intake by 50+ a day.
View 2 Replies View RelatedGeneral :: Setup A Functioning Imap And Pop3 Mail Server Using Dovecot-postfix?
May 4, 2010I'm somewhat familiar with Linux and became pretty decent at installing and configuring packages in Ubuntu. One of the things I was able to do with my tinkering was set up a functioning imap and pop3 mail server using dovecot-postfix. Now I'm experimenting with Slackware to get the feel of another distro, and I noticed that the mail server packages were already installed. On my client computer they can pick up that I have users configured and my mx record is working.
However it is failing to send mail saying that it is failing to relay the e-mail message and that the server responded 5.7.1 which was a problem that I was having in Ubuntu when first configuring the mail server. The fix was to edit the postfix.conf file and adding the localhost name of my server. Does anybody know of the file that I need to edit to make it possible to relay my messages with both pop3 and imap.
Server :: Unable To Setup A NIS Server Setup On CentOS System
Jan 19, 2010We are trying to set up a NIS server on a CentOS system. We need to have a NIS server which can provide NIS authentication to a couple of clients. We are practically new to all this stuff.
Just googled to find some ideas about installing ypserv and ypbind and portmapper. We did all that and also started them successfully. But now the clients are not able to join to the NIS domain . The error log states "YP_DOMAIN NOT BOUND".
I guess we have not entered the /etc/yp.conf, /etc/hosts files properly. Please let us know the detailed steps to setup a NIS server .
Also, please let us know what entries should go into the different /etc/<file_names>? What is meant by HOSTNAME in the /etc/hosts file?
Is there any other files which need to be changed? Are we missing any steps?
Also to add-on, while executing the ypinit command we faced the following error:
At this point, we have to construct a list of the hosts which will run NIS servers. localhost.localdomain is in the list of NIS server hosts. Please cont inue to add the names for the other hosts, one per line. When you are done with the list, type a <control D>. next host to add: localhost.localdomain next host to add:
The current list of NIS servers looks like this:
Is this correct? [y/n: y] y
Error running Makefile.
CentOS 5 Server :: Configure Postfix On 5 To Relay Email From The Internet To The Exchange Server
Apr 24, 2011i need to configure postfix on centos to relay email from the internet to the Exchange Server and i also need that emails sent from the exchange within the same domain be sent to postfix then resent to exchange because i have spamassassin and clamav installed on centos to filter all incoming and outgoing mails ...
View 1 Replies View RelatedServer :: CentOS Mail Server - Dovecot & Postfix
Oct 2, 2010Having my Diploma Final Project on setting up a virtual mail server within Local Area Network (LAN) only.I had follow this how-to http://www.linuxmail.info/squirrelma...o-in-centos-5/ and complete up to squirrealmail web mail. I added two new user to try on sending and receiving mail. It works.I run CentOS on VMplayer. I using my laptop to do all the stuff, the laptop default OS is windows 7, i install VM player on it and run CentOS inside the VM Player.I want to do testing on Windows 7 side by installing Thunderbird email client program, i want to connect to mail server with SMTP, IMAP/POP3 using the email service. I have problem while setting up user account on Thunderbird, Thunderbird seems like cannot detect my CentOS mail server. How ?
Do i have to do any other configuration on CentOS ? any DNS ? port number for IMAP,POP3 or SMTP ?
CentOS 5 Server :: Add Disclaimer To Postfix?
Dec 22, 2009I have a webserver that I run myself utilizing CentOS 5.3. I added a postfix server just to send outgoing mail to people who are part of my webpage. I do not do any email exchange so I can actually receive email on the server, only send (if someone can help me out with that I'm willing to listen).Basically I want to add a disclaimer to the bottom of every email that gets sent out, no matter who sends the email, stating the the email is sent from an unmonitored email account so don't reply to the email. I followed the steps listed here [URL].. even though it was for Fedora 8 it seemed to do what I needed it to do. For some reason no matter who I send email with the disclaimer does not show up. I am doing masquerading so when the email gets send it shows it comes from my domain, not localhost.localdomain because most webservers block it assuming it is spam mail.
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