Postfix is a free and open-source mail transfer agent (also "MTA"), written in 1997 and still actively developed.

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4
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197 views

dovecot WILDCARD SSL (certicate.crt, private.key, intermediate.crt) not working

I have installed dovecot and postfix and got it working, but when I change the ssl_cert_file, ssl_key_file and ssl_ca_file dovecot configuration to my WILDCARD SSL certificate (working on apache) it ...
3
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16 views

How to set up Postfix to save the message body in the log file?

I need all the body of incoming and outgoing messages are written to the log file. How to setup Postfix to do that?
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142 views

Delivering emails for one user from two domains into a single mailbox in Postfix+Dovecot

I am setting up a mail server using Postfix+Dovecot on RHEL7. Though it is not required, I would like to set it up such that the mail server is able of hosting multiple domains. The problem that ...
2
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268 views

Problems with postfix and sending mails

I have ran into problems while configuring my postfix for my CENTOS machine. Note:The mailserver itself should be localhost only and only be able to send mail internally. the following shows up when ...
2
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0answers
111 views

Can I reconfigure postgrey to keep mail instead of rejecting it?

I have postgrey on my mailserver and it works really well. I actually suspect it works a little too well in that there are quite a lot of faulty mailservers out there that don't bother retrying. ...
2
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0answers
506 views

Remove root@localhost from e-mail's headers

I am trying to install an e-mail server in my CentOS server. I have installed and configured postfix and bind, but when I send e-mails I still get "root@localhost" and 127.0.0.1 in my e-mail's ...
2
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0answers
620 views

“Recipient address rejected” when sending an email with sendgrid

In postfix, I'm using relay_host to send an email to an external address using sendgrid, but I get an error about local ricipient table when sending an email from my PHP code. This is my main.cf in ...
2
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0answers
626 views

Postfix: change sender address of bounce (mails from fetchmail)

I am running a Postfix MTA. Fetchmail is used to get mails from several POP3 accounts. The problem is: If a mail cannot be delivered, e.g. because it exceeds the size limit of the mailbox, a bounce ...
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19 views

Has my virtual alias table somehow been exposed?

I run a CentOS server with postfix 2.6.6-6.el6_5 (just updated to 2:2.6.6-6.el6_7.1 a few minutes ago). I use the mail server to do aliasing and to send out some email from localhost to users for the ...
1
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0answers
12 views

Postfix with Relay and fetchmail

I have a server with Zarafa, Postfix and fetchmail. I have a local domain: mylocaldomain.com The local domain is configured on my server as mydomains on postfix. So every mail to @mylocaldomain.com ...
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12 views

Is it possible to tell Postfix to keep full emails for (e.g.) a week after they are sent?

Our mail server was recently blacklisted because a web server was infected with a spamming virus. We discovered and blocked the guilty sender only after we started inspecting the message bodies of ...
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43 views

postfix to send email from a client

I own a domain company.com. All employees in company have gmail accounts. The domain registrar already provides email forwarding, so if I were to send something to bob@company.com, it would be ...
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102 views

PostFix Issue When Sending Emails through Outlook

I also have the Relay access denied issue and it's really disturbing me. I can send and receive normally from the web mail. However, when I configure the email on [B]Outlook [/B]without using ...
1
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0answers
70 views

Postfix relay though another postfix server

I have a postfix server on my LAN running with Virtualmin. I have a total of 4 domains on this server and I need to be able to send and receive email to and from the domains on this server. The issue ...
1
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0answers
43 views

Dovecot authorization failure

I have set up an mail server on Ubuntu 14.04 basing on Dovecot and Postfix. So far, everything works well with my first user (in my case "webmaster"). Now I have added some more users but I cannot do ...
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18 views

Postfix can not send out email

i just installed Postfix on my Ubuntu but i can not send out any email, here postfix config file #myorigin = /etc/mailname smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu) biff = no # appending ...
1
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0answers
62 views

I'm Having trouble Receiving Incoming Emails on PostFix

I feel like I get thrown around when I ask questions on these sites (superuser/stackoverflow/serverfault) so please excuse me if my question is in the wrong place and point it out to me and I'll be ...
1
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0answers
169 views

How to bounce an email

I'm getting spam (thanks to NameCheap not properly cloaking my email address), and I'd like to bounce the emails back to the spammers so they think my account doesn't exist. They're not forged From ...
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144 views

Prevent Fake E-Mails with Postfix

I have a secure and almost-properly-configured SMTP/Dovecot server running, but I do have a problem. As it's currently set up, anyone (who has valid credentials) can send e-mail from any address in ...
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81 views

Conditional relay with credential based on domain recipient?

I use postfix to send email directly, but sometimes outlook.com won't deliver my business email messages. After changing the SPF record, the delivery succeeded, but goes to the recipient's Spam ...
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0answers
479 views

Postfix - SMTP mail delivery failed with “Connection timed out” error

I have installed postfix mail server in ubuntu machine. I am facing some issues with the mail sending to other domain mail servers (Google, Yahoo, Outlook...). I am using virtual domain to send the ...
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80 views

Postfix - relay issue on my end?

Maybe someone experienced more than me in Postfix can help me out a bit. mail.log:Dec 11 22:14:36 server596 postfix/smtp[31301]: 3A5BC17AC00D: to=<int@njsbw.com>, ...
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208 views

How can I have Postfix add a header to all outgoing mail based on command?

I would want to have postfix to run the command: /usr/bin/hashcash -mXb 26 <RECIPIENT1> <RECIPIENT2> ... <RECIPIENTn> and add the output of this command as a header. How can this be ...
1
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0answers
109 views

Multiple postfix instances one host

I have a server on which i need to add setup a second postfix configuration to send e-mail (doesn't have to receive) that's being sent in from a PHP web application that's hosted on the server aswell. ...
1
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30 views

How to add new 'From' email id each time sending email using PostFix server

I am new to PostFix and have setup PostFix as a server recently. In the testing, PostFix is working fine and relaying the emails with 'From' email address stored in the PostFix credentials files likes ...
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234 views

Duplicate and relay mail from postfix

We currently use Google Mail for our teams email. We want to move to a self-hosted email server. Some of our team members prefer using Google Mails interface and asked if we could continue having ...
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170 views

Email Issue - “On Behalf Of Blackhole”

I am experiencing an odd email issue that I haven't been able to find any answers to. I have a Ubuntu server setup with postfix that uses mailgun to send emails. I'm not using the mailgun API, just ...
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526 views

postfix doesn't work with IP as hostname

Using Ubuntu 14.04 x64 I had a working installation of Postfix which was handy for sending emails in my terminal, but I had an issue with an application that was critical for my workflow. In order ...
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2k views

Google Mail blocking emails sent by postfix

I have set up an email server, but I have a problem with sending mails to Gmail. This is my /var/log/mail.log: Jun 4 20:49:26 jenny postfix/qmgr[6064]: 4CBDB67482: from=<mail@[...]>, ...
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167 views

Email Spoofing - Bounce back messages

A client of mine (onto my mail server) receive back some bounces for mails that he haven't never sended to non-existent addresses. Of course, inspecting the header, the outgoing server isn't mine. I ...
1
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0answers
102 views

Query regarding smtp_fallback relay in postfix

I have 3 postfix instances in my server. I am trying to configure my server in such a way that, the deffered mails in 1st instance need to be relayed to the 2nd instance. Thereby i can reduce the ...
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532 views

mozilla thunderbird can receive emails but cannot send (imap/postfix)

i run a dovecot imap server on an ubuntu 8.04 machine (old, i know, but there's no chance of an upgrade any time soon). anyway, all was working smoothly until i rebooted the server the other day and ...
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286 views

Configure Ubuntu Server VPS to send mail without going to spam

I have installed and configured Postfix on a VPS. I have managed to get it so I can send and receive mail. However every time I send mail from It, it get's marked as spam and was wondering how I ...
1
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0answers
142 views

OpenDKIM Signing return fail when spaces in mail

Few days ago I install OpenDKIM Signing using on my CentOs 6 server by manual - http://stevejenkins.com/blog/2011/08/installing-opendkim-rpm-via-yum-with-postfix-or-sendmail-for-rhel-centos-fedora/. ...
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0answers
185 views

Postfix configuration issue?

I don't know if it is the right place to answer this question (please tell me I will remove it). I have an error message when using telnet to send an email to ab account I have specified in my postfix ...
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263 views

postfix mail queue - get bottleneck - Debian squeeze

I have a problem with Postfix 2.7.1, Debian Squeeze: send and receive mail with no problem working locally, send e-mail outside work without a problem, the problem is when someone sends a large ...
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323 views

Dovecot/Postfix-mysql e-mail Aliases are not correctly forwarded

I recently set up Dovecot/postfix-mysql on my Debian Squeeze Server and I have a bit of a problem. When ever I send a email to an alias (foobar@mydomain.com forwarded to foobar@gmail.com for example) ...
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206 views

In Ubuntu 12.04, how do you tell saslauthd to use getpwent instead of PAM?

I have a fresh install, upgrading from ancient Ubuntu 8.x, and I just can't figure out where this setting is supposed to be in Ubuntu 12.04. Please help! Thanks
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243 views

Ubuntu 10.10 Desktop: configuring postfix to send mail as

I have been learning how to use postfix to end email using the command line, which I find helpful when at work and I don't want to open a browser or switch to mouse, to send an email about my broken ...
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336 views

DKIM milter with Postfix doesn't sign additional headers passed to PHP mail() function

I use CentOS server with Postfix for mail sendind and my PHP application use mail(0 for mail sending. Some "FAQ" problem with this setup have been solved quickly using Google (e.g. passing "From" ...
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6 views

Postfix maillog interpretation

What gives me trouble is this: May 17 03:27:31 server postfix/qmgr[6628]: 96SE62EI0T6H: from=<some.address@domain.bla>, size=4893, nrcpt=30 (queue active) This line is normal, but, as I saw ...
0
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0answers
9 views

How do I configure Postfix to reject mail from a local domain when not from localhost?

This is almost what I want, but maybe not quite. And something is certainly missing from the instructions because I tried that to no avail. I'm running Alpine linux in a Docker container to figure ...
0
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0answers
17 views

Setting up email server with postfix

I am setting up an email server on Amazon ec2 running Ubuntu 14.04 using postfix. I am trying to have emails come from: user@example.com In postfix, I have the following set inside ...
0
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0answers
9 views

Postfix: reprocess mails placed in wrong inbox (/var/mail/nobody) due to misconfiguration?

Due to a misconfiguration of $mydestination and virtual alias maps, all my server mails were placed into /var/mail/nobody by postfix. Can I reprocess these mails via postfix and send them to the ...
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30 views

Trouble setting up mail server(postfix, dovecot) on centos

I'm having trouble setting up my mail server, i have followed this tutorial: http://www.krizna.com/centos/setup-mail-server-centos-7/. Now i'm trying to send mails to my outlook adress, but i can't ...
0
votes
0answers
35 views

Migrate emails to new server but prevent Outlook from re-downloading them

I have a sendmail server that is nearing end-of-life. I need to move all email accounts to a new server (postfix), but I don't want Outlook users to re-download all their existing messages after the ...
0
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0answers
22 views

How do I eliminate the hostname from HELO greeting of postfix?

According to http://www.postfix.org/BASIC_CONFIGURATION_README.html, postfix should derive $myhostname if you set myorigin = just the domain name, however I haven't found that to be the case. I did ...
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0answers
31 views

Piping Postfix messages to a script

I have googled and found many instances of people asking this same question, but none of the hits has helped me. Coming from qmail, I thought that Postfix would be easier. I have Postfix installed on ...
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0answers
4 views

Configuring postfix to work with TLS

I have a couple of questions regarding postfix config. First of all I need TLS as of the perl smtp plugin mediawiki uses, forces TLS authentication. Will it work on 25? Or what's the advised port? ...
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27 views

Postfix configuration: bypassing a relayhost under certain conditions

We have a simple email system that uses Postfix to forward on emails sent to our accounts to our gmail accounts. This is achieved through virtual_alias_maps in main.conf and a corresponding file that ...