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

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Postfix error: proxy-reject: END-OF-MESSAGE: 451

I installed mail server by using the fufix bash install script. I cannot send and receive messages. Keep getting this message in log: mail1 postfix/smtpd[25142]: proxy-reject: END-OF-MESSAGE: 451 ...
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19 views

Mail classified as spam due to incorrect timezone in Date: header

I'm running a mail server using Postfix and Dovecot. My problem is that my emails are getting classified as spam, even though I have PTR, DKIM, DMARC and SPF set up correctly. The test on ...
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34 views

Receiving email on linux

I have a CentOS box with a basic postfix instance installed that has a relay configured. The box can send emails to the outside world (ie Gmail, Yahoo). The question is how can I get this box to ...
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0answers
20 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 ...
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0answers
13 views

Why use both Dovecot and Postfix?

Just out of curiosity, there are dozens / hundreds of tutorials helping you setup a dovecot - postfix mail server. On the surface, both of them are email servers, why use both? Mail servers are ...
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2answers
12k views

NOQUEUE: reject: Relay access denied

I recently setup a mail server following the instructions on linode.com (https://library.linode.com/email/postfix/postfix2.9.6-dovecot2.0.19-mysql) except I am using postgreSQL instead of mySQL. ...
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1answer
14 views

Match .file with POSIX extended regular expression

I am trying to match any file with a dot in the front using POSIX extended regular expression. I know in regex this is ^\..*. This is what I'm using it in: #!/bin/sh MONITORDIR1="/hdd_1/path/to/dir" ...
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6 views

Postfix - How to send local mail with attachment?

I followed a guide on how to set up Postfix for local mail delivery. Guide: http://cafim.sssup.it/~giulio/other/Postfix_Setup_for_Local_Mail_Only.html I would like to send mail containing a single ...
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4answers
30k views

How to send email with attachment by postfix from command-line?

I've just setup a new Ubuntu 10.04 LTS server on linode for myself. Followed an excellent instruction at: here to finish the installation of some basic stuff including postfix. I am trying to figure ...
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1answer
2k views

PHP mail() function not working in Mac OS X

I know this question has been asked many times and people use to give many solutions. I have followed almost all the possibilities which I come across after investigating on it. but nothing worked ...
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2answers
6k views

POP3 client not downloading all emails from server

I've an old email account (pop3) with lots of emails that I want to download. I don't care what client - but I'm currently trying with Thunderbird. It says that there are no new emails on the server. ...
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1answer
22 views

Postfix issue on Ubuntu

I have a little issue with my Postfix, I can't receive any email... Every time I try to send an email from an external source, I receive : Jul 28 11:05:38 DESTHOSTNAME postfix/smtpd[24871]: NOQUEUE: ...
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2answers
1k views

Debian / Monit: mail is only sent to local system, not to outside address

I have a Debian server and have monit installed and running. I use the following settings for alert mails: set mailserver localhost # primary mailserver set mail-format { from: monit@abc.test } set ...
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0answers
20 views

Postfix virtual map to username at domain

I'm trying to have postfix forward emails sent to a few different emails at a domain to the same Gmail address. I have gotten it to forward 2 of the 3 emails addresses I'm trying to forward but the ...
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0answers
15 views

Unable to send email using PHP

I have postfix installed, but can't get it to send any email. I'm not sure what the problem is, it could be postfix it could be something else. I just can't get php to send mail Here is my setting's ...
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25 views

Postfix install fails. MySQL conflict

I'm using CentOS 6, and trying to create a virtual mirror on a new server of an old one (which someone else setup). As much as possible, I want keep everything with the same version, but I've started ...
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0answers
37 views

Postfix - Alias users SMTP login

I have a postfix mail server, and am looking for a way for aliases to send mail. For example, I have the user alias@example.com which redirects to myemail@gmail.com defined in my mysql mail_aliases ...
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0answers
34 views

is there easy auto config software for setting up postfix/dovecot/mysql? [closed]

I'm really pulling my hair out on this one. I have installed all of the apps mentioned above, along with webmin and postfixadmin. Webmin gives me settings for dovecot but asks for a sql configuration ...
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0answers
60 views

Postfix Outgoing mail not working from external locations

I'm currently trying to get Postfix and Dovecot to work on my Ubuntu server, and it partly works. I got it working on Roundcube. I was able to send mails to and receive from external servers like ...
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1answer
80 views

Samba4 group email address lookup postfix/dovecot

I have samba4 ad dc setup with my users and groups working fine loginwise. I have installed a postfix/dovecot mailserver on my dc, which is working fine with single user mail addresses, sending and ...
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1answer
34 views

How to add regex aliases in Postfix when using MySQL

I need to create regex based catchall aliases in Postfix setup with MySQL. I have found examples of a mysql_virtual_alias_maps_regexp.cf with this query: query = SELECT goto FROM alias WHERE '%s' ...
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2answers
278 views

How do I enable DKIM for bounce messages in Postfix

I have set up a linux email server with Postfix and have correctly set up SPF and DKIM. When I send an email, the email is signed properly, and when I view the source from the receiving client (such ...
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1answer
7k views

Postfix Relay Access Denied When Sending To Gmail With Telnet

I have postfix and dovecot setup to deal with mail for my domain. imap appears to work ok when reading local mail but when i try to send an email using telnet with localhost and the smtp port it gives ...
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1answer
46 views

Roundcube can send email, but not displaying received messages

I recently installed Roundcube on Debian Linux. I am using Postfix and Courier IMAP as well. Installation was a breeze and I was quickly able to send an email from me@myserver.com to me@gmail.com. ...
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1answer
62 views

Cant receive mail from gmail (2)

I've noticed mails being sent from my gmail account to a mailbox on a centos 7 server are not arriving their destination, but no bounce message returned as well. This is what I've found in maillog: ...
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1answer
89 views

does postfix 2.11 needs to be patched with VDA patch for per user or domain Quota support, when dovecot 2.2.x is used as imap server?

does postfix 2.11 needs to be patched with VDA patch for per user or domain Quota support, when dovecot 2.2.x is used as imap server ? Im using ubuntu 14.04 LTS with postfixadmin 2.3. i appreciate ...
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30 views

I don't recieve virtual alias email from my postfix/dovecot server in Gmail

For some reason the regular virtual user email accounts like admin@example.com comes into Gmail via POP3/IMAP just fine - but none of the virtual alias email comes into GMail! Gmail says it retrieved ...
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1answer
81 views

Postfix with SASL and Dovecot 2 configuration

I'm trying to configure my server to receive and send mails. Sending mails is no problem, but there seems to be an issue receiving mails. I have this configuration working on my old server, but now ...
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0answers
13 views

DoveCot users + multiple domains

Hi I am trying to get dovecot to work with multiple domains My /etc/aliases looks like this # See man 5 aliases for format postmaster: root shop: shop ben: ben When I try changing it to ...
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0answers
27 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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216 views

Relay access denied (in reply to RCPT TO command) Postfix Issue

I am trying to configure my server for email taking reference form this link: koray.me/smtp-relaying-outgoing-mail-in-postfix-using-webmin. I used Mandrill smtp server in my case. I have also ...
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61 views

The emails sent by mandrill are soft-bounced by the postfix server

We have a app written under php (symfony2) and we are sending a certain type of email via mandrill. It works the past months but now all the emails sent to info@domain.com are being soft-bounced and ...
6
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0answers
578 views

Connection timing out when connecting to Milter service

I'm using a VPS with CentOS 5, containing Postfix and OpenDKIM. I have set up OpenDKIM using this guide. Everything seems to work properly as the log in /var/log/maillog does not report anything other ...
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0answers
28 views

make postfix bypass amavis completely for specific domains

I want the postfix agent to bybass the amavis scanner for all mails from and to a specific domain. So, i added the following line to /etc/postfix/main.cf header_checks = ...
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13 views

Postfix errors when triggering mails from a server different than the mailserver

We used to have a server for everything, where our PHP scripts and the mail server would run on the same server. Now we moved our php scripts to a different server and we seem not to be able to send ...
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0answers
315 views

smtps service not found/“warning: connect to transport private/smtps: No such file or directory”

I'm trying to access an SMTP smarthost example.com using TLS via port 465 by adding smtps inet n - n - - smtpd -o smtpd_tls_wrappermode=yes -o ...
3
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2answers
7k views

Monitor Postfix outgoing mail delivery

I'm using GNU Mailman with Postfix to run a mailing list, and would like to monitor the delivery of outgoing mail, that is: for each mail sent from the list, check whether a 250 (OK) message was ...
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1answer
376 views

Postfix not delivering messages (554 Client host rejected: Access denied)

Messages from localhost is working normally, but when I try to send mail from i.e. gmail to my domain (as in virtual domain mapping) postfix is denying it with error (554 5.7.1 : Client host rejected: ...
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1answer
307 views

How do I block Postfix from sending spam?

My postfix is sending spam from a random-name@mydomain.com address. How is this possible and how do I allow only www-data@localhost to send and postfix to only deliver from myname@mydomain.com to ...
0
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1answer
55 views

Posftix configuration with antispam

I have postfix with anti spam and when anti spam returns status 554 (spam mail) to postfix the mail is bounced to the sender. Is there a way to decide another action for postfix for 554 like reject. ...
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2answers
106 views

Postfix not connecting to postgres pool with local ip address

I have a postfix e-mail server that is contacting a database to query and verify e-mail addresses etc. It connects using pgbouncer to cycle through connections, however my problem was that the ...
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0answers
23 views

postfix multi bcc_sender_maps

I am trying to configure postfix to send mails to multiple e-mail address using sender_bcc_maps user1@domain.com -> bcc1@domain1.com bcc2@domain2.com my configigurations is postfix + vusers (sql) ...
2
votes
2answers
3k views

CentOS 6 - Inodes full - can't delete folder containing files

I have a CentOS 6 server at rackspace with 40GB of space. My server kept crashing with 'no space left on device' errors but there is over 50% free. When I run df-i this is the output: /dev/xvda1 ...
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1answer
31 views

Postfix / Dovecot Mail appears in logs, but not in its respective folder

I'm currently trying to set up Postfix with Dovecot, but something does not seem to work the way it should be. For some reason, mails I sent to my mail account appear in the logs, but do not become ...
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0answers
115 views

Signing-milter / SMIME - how are this email signed incorrectly?

I have a problem with signing-milter (http://www.signing-milter.org). The problem is that the -b flag is required, and the -b flag is not recommended because it outputs non-RFC compliant email. ...
2
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1answer
729 views

postfix - warning: connect to transport private/smtp: Connection refused

I have been having trouble with my postfix+dovecot mailserver. Every time I try to send an email to a different server (gmail etc.) I get the following messages in the log: postfix/qmgr[28918]: ...
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0answers
85 views

Outlook 2013 connects to Postfix/Courier server and can send emails, but doesn't open Inbox

I've configured a Debian server with Postfix and Courier along with SquirrelMail for a client. I've configured the server with his email accounts, and these are accepting emails without issue. I've ...
2
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3answers
2k views

Is it possible to queue a message by writing it to file?

I'm wondering if it's possible to create mail messages and put them into the postfix queue simply by writing files to the hard drive. Currently I have a script which uses a socket connection to dump ...
0
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1answer
77 views

postfix how to allow domain but block subdomains

I have a postfix mail gateway that passes mail to and from a domain. I want it to reject mail to or from subdomains of that domain. Is there a simple way to do that?
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23 views

How configure spamassassin to deliver spam to a spam folder [duplicate]

I created a small mail server following these instructions: https://www.linode.com/docs/email/postfix/email-with-postfix-dovecot-and-mysql for mail server and ...