Server :: Configure Sendmail As Forwarder For All Received Email?
May 4, 2011
So I have two servers in my environment, I have an app server that runs my Java App on it and then I have a utility server. Right now, I have that utility server acting as a simple mail gateway so when my app server needs to send an e-mail out, it forwards it to the utility server and the utility server sends it out to where-ever it's destined to. The Java server always sends as one specific user, let's call it bob@company.com.
This set-up is working just fine right now. Now, I also have my company.com e-mail hosted at an e-mail provider for all of my user's e-mail accounts and such. I also have a bob@company.com e-mail account so if e-mails ever bounce, they end up in this inbox. Again, this works fine.
My app is pretty email dumb so it can't authenticate itself or anything, that's why I am using sendmail on my utility server instead of my e-mail provider's SMTP server. What I would like to do is to configure sendmail to forward all outbound e-mails (and authenticate) to my e-mail provider's SMTP gateway using the bob@company.com account and credentials. Is it possible to configure sendmail to do this?
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Feb 9, 2010
Can I configure email forwarder in Webmin?
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Jan 21, 2010
I have an issue with sendmail. I need to configure sendmail to send email from command prompt to any domain. This is just for the notification purpose. I installed sendmail and sendmail-cf and sm-client. The following are the configuration I have done.
/etc/mail/sendmail.mc
1) dnl # DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl
2) m4 /etc/mail/sendmail.mc > /etc/mail/sendmail.cf
3) /etc/hosts = 127.0.0.1 localhost.localdomain
/etc/hosts = 192.168.2.50 mysystem
4) /etc/hosts.allow = sendmail:ALL
[Code].....
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Mar 23, 2011
dammit... all that typing and I hit the wrong "submit" button. *sigh*
Ok, I have a couple of SMTP servers for our infrastructure. They are running Postfix. I have them configured so that specific email addresses such as support@mydomain.com and billing@mydomain.com all go to a new support server that I am building with osTicket. Lets call that server SUPP1.
SUPP1 runs sendmail from the default install of CentOS 5 i386. At this point everything runs great. New emails get added into the osTicket system via a pipe in sendmail. Here's where the problem comes in. In order to accept mail, sendmail has to have the domain listed in local-host-names and the addresses in virtusertable. That works just dandy. But in doing so, sendmail believes it is the destination SMTP server for "mydomain.com". That means that I can't send mail from that server back into my normal SMTP servers. So things like the LogWatch, cron jobs, etc can't send notifications. Is there a way to work around that? For sendmail to ignore local-host-names for outbound email or something?
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Aug 16, 2010
After installing postfix on my server , all emails sent by a PHP class that i built , are received to spam folder , no matter what i do .am not an expert , except in PHP , the class i built works fine everywhere else except on this server , so i think the problem might be from the server it self ?some told me wrong configuration/software on my server , others told me wrong DNS stuff . actually i don't understand the DNS stuff , and am not an expert in linux softwares and services but i cann install/configure them , so could anyone please check the DNS for problems ?
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Jan 25, 2011
I would like with bash to output the content of my very last email that has been received (I use gmail), especially using fetchmail or mutt.
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Feb 24, 2010
I have users [URL] unable to send email to [URL]. [URL] user also unable to send email to [URL]. But both email addresses are fine as they can receive email from others or from [URL] and [URL]. I able to telnet mail server 110 and 25, no problem. Version: ESMTP Sendmail 8.12.10
Mail Log:
Feb 23 11:36:35 mail sendmail[16228]: o1N3aZxt016215: to=<xxx1@gas.com>, ctladdr=<xxx@abc.com> (501/501), delay=00:00:00, xdelay=00:00:00, mailer=esmtp, pri=442918, relay=gas.com, dsn=5.1.2, stat=Host unknown (Name server: gas.com: no data known)
[code]....
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Apr 24, 2009
I am trying to set up a mail server on centos5 using sendmail and dovecot, and eventually spamassassin and some antivirus filter as well. I'd also like to get the proper secure auth mechanism set up at some point too. But for starters, I've been having a lot of difficulty trying to even connect to the mail server from a client computer in the local network. I installed Eudora on the client and after some tweaking in dovecot I was able to connect to the mail server, but then when I try to send an email I get a "connection refused" error, with nothing being logged on the server that I can see.
The last time I set up a mail server was Fedora Core 2, so the configuration files have changed a bit to say the least, and I can't really refer back to those to set up this new server. Does anybody know of a good step-by-step doc on getting the mail server going? I've read the man pages and other various readme's, but these really only list out the available options with no really good explanation of what needs to be done to get the mail server going. If there isn't a full write-up on how to do this, I'll put something together when I'm finished so others can use it in the future.
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Jun 9, 2010
How could we bcc all outgoing / incoming email through my Sendmail (8.14) Server?
I tried this /etc/procmailrc
:0c
! backupmail@domain.com
But this get looped and backupmail received multiple emails of each for domain.com while sending locally from one user to another user.
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Feb 11, 2011
I use sendmail as the MTA for our company. Lately employees have started working from home. These home users send their email through our company MTA using SASL-AUTH. This works fine for the most part but lately we've seen problems with this. The SORBS blacklist looks not only at the IP address of our company's MTA but also at the IP address of our employees home computers. (After all, the home computer IP address is revealed in the mail header.)
SORBS has been rejecting emails sent from our home users because their dynamic IP address is present in the email headers. This is true despite their email passing through our company MTA which is on a properly forward and reverse mapped static IP. The company MTA is not listed in SORBS but the mere presence of a dynamic IP somewhere in the mail header is causing outright rejection. This seems bizarre to me considering home workers sending through a company relay is a common and reasonable business practice.
Can sendmail offer a solution here? For example, to change headers to obscure the IP address of the MUA or make the email appear to have originated directly on the MTA? I don't want to mess with internet RFC but frankly I'm out of ideas for how to get the mail delivered.
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May 4, 2010
I am having many mails transferred through my Sendmail server,but I want to configure only authorised email address through our server.optimize my mail server's configuration.
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Apr 9, 2010
I have a server "test1" in domain [URL]. I installed sendmail on it. I have another mail server "mailsrv" installed in [URL] which is my primary mail server and contains all accounts and mailboxes. Now when I send email to [URL] from [URL] it sends successfully. But when I try to mail to user1@abc.com it tries to search user1 in [URL] but I want it to forward this mail to mailsrv.abc.com over SMTP port. Delivery will then be taken care by [URL]
My log shows following
Code:
Apr 9 18:37:06 test1 sendmail[7512]: o39Db6Hs007512: to=user1@abc.com, ctladdr=root (0/0), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30047, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (o39Db6Il007513 Message accepted for delivery) It should not go to relay=[127.0.0.1], it should go to relay=[10.10.10.1]
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Dec 4, 2010
i have installed redhat 5.3 and install sendmail on it.it is working perfectly fine.my question is|:
(1) can i restrict the sender and receivers email in sendmail?eg. i want to do that i want to allow only particular email addresses to send and receive and all other will be discarded
(2) i made aliases for all user but it only receives received mail copy i want both sent and receive mail copy in aliases.
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Sep 11, 2010
I wish to setup an email server, using sendmail and DOVECOT on F13 With no modification of the DOVECOT config file ( fresh installation ), I can see that :
service dovecot restart
shows me :
service imap stop
service imap start
In the config file, I have :
protocols = imap pops imaps pop3s
and of course, I cannot connect as pop3
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May 5, 2010
I have a small internal network with about 8 or so servers or workstations. My mail server is getting spammed from all over to the root and other administrative accounts. I also get valid email sent to the root and administrative accounts from within my local network. Is there a way to block all email coming from outside my local network while still receiving it inside the local network to these specific accounts?
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Dec 16, 2010
I'm using Sendmail 8.13.8 on a CentOS 5.5 vServer (Virtuozzo). I'm using a loop in PHP to send a lot of HTML-mails via sendmail. Each mail is a mail with individual statistics for our users, so its not mass mailing, bcc is not an option. It all works fine, but when I take a closer look there is a problem heading our way with a high number of mails: For each mail sendmail opens up 43 files. Sometimes these open files get closed again very fast, sometimes not.
Here is an example using the PHP-script below, it sends 20 mails in a loop:
[root]# php test-mail.php
START: number of open files: 2113
END: number of open files: 2973
This is the worst case. The number of open files (lsof | wc -l) used to send the 20 mails is 860 => 43 open files per mail. Sometimes the files are closed very fast, so I get results like this, too:
[root]# php test-mail.php
START: number of open files: 2113
END: number of open files: 2242
This shows 129 (3 * 43) open files, so the open files for 17 send mails are already closed, for 3 mails the 129 files are still open. In the worst case and with lots of mails our server crashes, the numfile limit of 8192 in user_beancounters is reached (our ISP won't give us more than 8192). Sendmail DeliveryMode is background. Could it be that sendmail tries to send lots ob mails asynchronously and uses 43 open files for each?
I'm only depending on sendmail to deliver the mails, normally I wouldn't dare to touch the sendmail config (like 'if you don't know what you're doing, don't!'). It is not a problem of PHP. I verified this by sending mails via SMTP localhost to sendmail (opened 43 files per mail) and sending mails via SMTP to an ISP-relay (did not open any files per mail). This is the code for test-mail.php:
PHP Code:
<?php
$output = shell_exec('lsof | wc -l');
echo "START: number of open files: $output";
// HTML message
$msg = '<html><head><title>Test mail</title></head><body><p>Mailbody</p></body></html>';
// Set 'Content-type'-header
$header = 'MIME-Version: 1.0' . " ";
$header .= 'Content-type: text/html; charset=iso-8859-1' . " ";
for($i=0; $i<20; $i++) {
// send mail, this opens up 43 files for each
mail('you@yourdomain.com', 'Testmail '.$i, $msg, $header, '-f
[email]bounce@yourdomain.com[/email]'); }
$output = shell_exec('lsof | wc -l');
echo "END: number of open files: $output"; ?>
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Nov 27, 2009
I'm confused about the sendmail/ssl combination. so confused, i'm not even sure what i'm confused about :) I want to have email sent from our server to the rest of the world in a 'secure' manner. Just dl'ed and installed CentOS5.4: Linux rh5 2.6.18-164.el5xen #1 SMP Thu Sep 3 04:03:03 EDT 2009 x86_64 x86_64 x86_64 GNU/Linux the /etc/mail/sendmail.mc has the instructions
[Code]...
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Feb 25, 2010
1- how to config pop and imap on sendmail server
2- how to config smtp restriction on sendmail server
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Oct 5, 2010
complete steps for configuring Sendmail in Red Hat Linux 4 Enterprise.ve already configured my DNS server and it is functional
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Mar 19, 2010
I have to configure sendmail to send messages only and not receiving any mails on a linux server when the mail server is on another server.how to configure sendmail?
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May 12, 2010
I'm trying to configure procmail for sendmail but its not working. I added these 2 lines to sendmail.mc:
define(`PROCMAIL_MAILER_PATH',`/usr/bin/procmail')dnl
FEATURE(local_procmail)dnl
So my question is, where do I put .procmailrc? An examples I found on the net has the procmailrc in the users mail directory, but there are no user mail directories on the sendmail server. It is used purely to relay mail to the Exchange server.
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Feb 21, 2010
I am trying to set up sendmail on my intranet (home) webserver, so that it will send mail via my ISP. I have searched for similar threads including this thread, but the responses do not seem to have solved the problem. All I want is to call sendmail from Perl, to post myself the responses to a test form I am building, using my normal internet mail address. I do not want to receive or relay mail from any host except the web server itself (127.0.0.1).
I have edited sendmail.mc to define SMART_HOST as my isp's mail server and MASQUERADE_AS to be my local network name (which is not a registered domain - it is just the name I have given my home intranet). I have run make and built a fresh sendmail.cf, then restarted sendmail.
Using my form, I am able to submit the message to sendmail, but after 40 seconds the mail log shows a message
Code:
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Apr 19, 2010
It seems my sendmail (running in slackware 13.0) cannot send out emails correctly. I guess I need to tell it what is the smtp server to use. And, I heard, gmail's smtp server is available to use for this purpose. How to configure my sendmail this way?
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Dec 29, 2009
I have setup CentOS 5.2 with Nagios to monitor my network and have that configuration almost done. I have also setup Sendmail to forward all mail (really only Nagios notifications) out to my Exchange server using define('SMART_HOST', 'exchange.domain') in the sendmail configuration file and it seems to be working correctly.is there a way to configure Sendmail to forward all mail out through my Exchange server as it is now but send mail out to the internet itself if the exchange server is unavailable, somewhat like a failover configuration.
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Dec 18, 2010
I have the problem where the email was sent but not received by users.. The message as below code...troubleshoot
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Apr 24, 2011
i 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 ...
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Dec 15, 2009
I want to use imap account settings in MS outlook 2003/2007 with backup end Sendmail server. When i configure imap settings in MS outlook 2007 it shows mails are coming from Sendmail server , but another local Personal folder attched with outlook client. I have changed my settings so that every send items mail are coming under imap send-items folder ,but that extra folder stilli in place. I do not see any option how to remove this extra folder from my PST list.? As this never comes with if we are using MS Exchange.. Is there any way i can change my local delivery bydefault with IMAP folder only and save my Contact in IMAP Folder?
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Nov 4, 2009
For legal reasons, I may soon be required to have the ability to provide a user's emails to authorities as part of a discovery action.Not just a copy of backup.I'm running postfix with dovecot on rhel5.I'd need to be able to produce emails sent and received in a given time frame by a given user.
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Apr 25, 2009
I was wondering if you could recommend a simple way to achieve functionality where received email messages are automatically processed and used in SQL commands (depending on certain criteria, of course). For example, say I have made a PHP-based blog application and it's located at example.com and I'd like to give members the option of posting to their blogs by sending email to a special @example.com address. The email messages received there will be inserted into a database depending on the sender's address, with the body becoming the post and the subject line becoming the post's title, etc.
Another example could be how those trouble ticket systems let customers submit tickets via email, while the support agents operate via a database-driven Web application. Is this the type of thing one must code from scratch, or is there an open source solution out there which only needs to be configured accordingly?
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Jun 15, 2011
I have installed the Apache, PHP and MYSQL in the rackspace cloud server environment. Can anyone please guide me How can I configure email server in that with postfix or some other with multiple domain.
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