Free and open source mail transfer agent (MTA) that routes and delivers email. When asking about postfix problem, please include the relevant maillog lines and output of the following command: "postconf -n" (content of main.cf) and/or "postconf -M" (content of master.cf)

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0
votes
1answer
8 views

Trying to test postfix so I can get nagios's email feature working

Hello I am trying to get postfix set up and working so I can get Nagios to email me whenever a server goes down, raid fails, etc. The machine I have up is an Ubuntu server running in a virtual ...
0
votes
0answers
6 views

postfix outbound relay, only permit email to or from mydomains

How can I allow Postfix to: send emails from any domain to my domain, or from my domain to any domain, but reject emails from any domain to any domain. Example: mydomains = example.org, ...
1
vote
1answer
23 views

Best way to combine Google for Work with postfix mail server / e-mail routing

I am re-designing our company mail services, and we are migrating some mail-boxes to Google for Work. The objective is to have some users in the cloud, and some users on an on-premise Postfix server. ...
0
votes
0answers
7 views

Amavis error after reboot: SMTP [451] 4.3.0 Error: queue file write error

I'm running a mailserver on Debian Jessie with Postfix, Dovecot and Amavis as content filter. Everything works fine since months. Recently I had to reboot the server. After that, sending of mails does ...
0
votes
0answers
13 views

Postfix selectively bypassing the spam

I have Centos 7 installed and postfix as MTA on the server. Here is my anti spam postfix additional configuration: # main.cf ANTI SPAM disable_vrfy_command = yes smtpd_delay_reject = yes ...
1
vote
1answer
17 views

How do I view the contents of transport.db file in Postfix without the original transport file?

A Postfix server was given to me with a transport.db file, but no original transport file from which it was derived? How do I determine what the original contents of the transport file were?
-2
votes
0answers
15 views

SMTP Error (-1): Connection to server failed while sending emails from roundcube mail client

i am trying to setup a mail server and mail client in ubuntu 14.04 with postfix dovecot and roundcube i am able to receive mail but when i try to send mail it says SMTP Error (-1): Connection to ...
0
votes
1answer
13 views

Postfix canonical map for forwarding

Because of problems of IP/domain reputation (my server and domain very recent), I had to use Amazon SES as SMTP relay to be able to not have my mails flagged as spam. My setup with Amazon was working ...
1
vote
1answer
24 views

Postfix block double extensions in archive attachment

These days I have problems with trojans in attachments like: //EZuS.zip//invoice_scan_xcFSuO.xls.js contains a potentially infected object HEUR:Trojan-Downloader.Script.Generic. ...
-1
votes
0answers
20 views

Mails are signed with 2 DKIM signatures in Postfix

I´ve installed postfix, opendkim, dovecot, spamassasin and amavis an debian 8. I´ve installed the dkim service by ...
0
votes
2answers
45 views
+50

signed-by in mail header is not added as I have installed and configured my domain

I have checked in http://dkimcore.org/c/keycheck that my site has a valid TXT record for DKIM. My domain is myDomain.com and my selector is mail. I used -t and says to servers to ignore errors and ...
1
vote
0answers
13 views

Troubleshooting: Integration of SSL certificate into Postfix

In order to use TLS on my Postfix server, I have used directly the nginx ssl files from my other server, which also uses the domain that I want to use with postfix. I have integrated the files in the ...
-2
votes
0answers
13 views

Postfix for multiple project on VPS Ubuntu

I have a dedicated server on which there are many projects configured. Out of those I want a email send facility for one project using POSTFIX. But when I use this, the email from other projects are ...
0
votes
0answers
9 views

Postfix smtp send (from Email + ip ) condition if not reject . how to?

Dear friends, i have case that require that i should allow some application to send without authentication (done mynetworks). my problem if i allowed any ip to send using mynetworks it can send from ...
-1
votes
0answers
28 views

postfix - outlook.com as smarthost not working

I set up my postfix like this. Important to mention that This configuration works perfectly when using smtp.gmail.com as smarthost: smtp_sasl_auth_enable = yes smtp_sasl_security_options = ...
-2
votes
0answers
13 views

configure outgoning emails using opendkim

I want to configure opendkim to sign outgoing emails through my mail server (postfix). I configured opendkim for only one domain but I have an application send emails from another domain I want those ...
0
votes
0answers
19 views

failed/unauthorized logins attempts via SMTP/IMAP

My server host sent me this message: 80 failed/unauthorized logins attempts via SMTP/IMAP We have detected abuse from the IP address xx.xxx.xx.xx, which according to a whois lookup is on ...
0
votes
0answers
27 views

postfix server flooded with junk email to other users

I have just noticed my postfix (maillog) is being flooded with external emails to be sent to both local and external email servers.. As far as i am aware, i have turned off relaying for other ...
0
votes
0answers
11 views

Rewrites message headers from remote SMTP clients to a local address

Question in the title, is it possible to rewrite message headers from remote SMTP clients for emails send to local addresses? (using Postfix, Exim, or anything else)
0
votes
2answers
29 views

FQDN, DNS, Hosts, postfix

Let's say I bought this domain: example.com Name servers under DNS manager all points to example.com That subdomain(example.com) of nameservers points to an IP. Also, note that hostname unique is ...
1
vote
0answers
15 views

Debian Postfix distribution list accessible only for few adresses

Actually I'm working with Postfix server and trying to implement distribution list with simple restrictions. My assumptions: I created alias: managers@mydomain.com -> manager1@mydomain.com, ...
1
vote
1answer
42 views

Postfix can't connect to MariaDB on 127.0.0.1

(Yes, this question seems very similar, but I understand why I get the message. What I don't get, and can't find any palpable information about on my own, is what to do about it. So here I am.) I ...
0
votes
0answers
11 views

Single certificate for postfix/dovecot mail server with multiple domains

I have a single IP-address and thus one mail server (postfix+dovecot on CentOS 7). I have one main domain name and each client has their own domain name on which they want to receive mail. All A and ...
0
votes
0answers
29 views

mail.log file is growing too quickly

my mail.log file is currently growing out of all proportion. It's logged over 15Gb of content today and most of that seems to be down to spamassassin. There are a few questions that I can't ...
0
votes
0answers
22 views

MySQL 5.7 under Debian Jessie with postfix-mysql

I currently have MySQL installed from the MySQL APT repository and am on the 5.6 branch. It comes with libmysqlclient18 and postfix-mysql requires it. If I want to switch to the 5.7 branch, APT will ...
1
vote
1answer
22 views

How to flush postfix queue one mail at a time?

Sometimes, mails stay stuck in my postfix queue, the distant server saying "Too many connections, slow down". I already configured my postfix for specific domains to send only one mail per second, but ...
0
votes
0answers
5 views

Increase in “table lookup” on old Postfix/PostgreSQL installation

The box is still running PostgreSQL 8.1 and this started to increase a few weeks ago. It is only happening while the server is a bit busy. fatal: ...
2
votes
2answers
49 views

Debugging spamassassin with postfix

I am trying to setup spamassassin milter on my postfix mail server. SpamAssassin Server version 3.4.1 running on Perl 5.20.2 with SSL support (IO::Socket::SSL 2.019) with zlib support ...
0
votes
1answer
25 views

Generating SSL key for Dovecot and Postfix

Following this tutorial: https://www.vultr.com/docs/simple-mailserver-postfix-dovecot-sieve-debian Trying to create a self-signed SSL certificate for testing purposes for my mail server, using code: ...
0
votes
0answers
16 views

Postfix smtp relay to Office 365 for certain sender-domains

I'm running Debian Wheezy with Postfix 2.9.6 and I'm trying to enable the smtp relay for some certain sender-domains for office 365. I whitelisted my IPv4 for smtp relaying on the exchange server: ...
0
votes
0answers
18 views

Roundcube unable to connect to Dovecot/Postfix via IMAP

I've recently moved a working isntance of RoundCube from my mail server (running Dovecot & Postfix) to a different server, and pointed it at the original server. However, since the move I have ...
1
vote
1answer
29 views

Can't receive mail with dovecot + postfix setup

First time setting up my own mail server on a machine running the latest Ubuntu After looking around i decided on dovecot + postfix and Virtual users with mailboxes in /var/mail/vmail/%d/%n For the ...
0
votes
2answers
16 views

How to configure MAILSERVER so that MAIL CLIENTS can automatically find settings

I have a mail server: postfix; dovecot; mysql; ssl cert. That is work. But, how to configure my MAILSERVER so that MAIL CLIENTS (thunderbird, apple mail, outlook) can automatically find settings ?
0
votes
0answers
16 views

AMaViS - Quarantined and Relayed mail sending address

Using AMaViS, I recently had this problem for outgoing mail: Mail was reported by AMaViS with BAD_HEADER_7 or more accurately: X-Amavis-Alert: BAD HEADER SECTION Missing required header ...
-1
votes
2answers
33 views

Postfix admin/Postfix: Send e-mail from an alias

I use postfix (basically postfix admin) to define my e-mail inboxes and SMPTs. Say I have a one e-mail inbox: maininbox@mydomain.com Now I have a few aliases. Say I have the alias: ...
0
votes
0answers
20 views

Postfix/Dovecot Mail: fatal: no SASL authentication mechanisms

I'm getting this issue when trying to setup Postfix/Dovecot to work on my Ubuntu server, 15.10. Followed this guide to try to setup the server, worked in the past. However, trying to upgrade to 15.10 ...
-1
votes
0answers
15 views

DNS and Postfix configuration on Webmin with vhosts

I have a server on Digital Ocean that runs CentOS 7 and Webmin/Virtualmin with multiple vhosts. I'm having difficulties understanding how to configure the mail server correctly and the DNS, so to both ...
1
vote
1answer
21 views

Postfix - bounce messages are not sent to postmaster

I ban and reject some spammer domains/IPs, via: smtpd_recipient_restrictions = check_sender_access regexp:/etc/postfix/client_checks, ... client_checks file: /\@domain\./ REJECT and it works ...
0
votes
3answers
29 views

Emails not being recieved

Ok, I've asked a couple of questions already. Basically my server was hacked, I've managed to get everything back online and working and hopefully the hole they got in from is plugged, I now have ...
1
vote
1answer
19 views

Enabling STARTTLS for all on Postfix with Zarafa

I ran into a problem which I just cannot solve with just googling it - I need some expert help. My company runs it's own mailserver (postfix with zarafa groupware). We're an insurance company so we ...
0
votes
2answers
20 views

Create and save mail to inbox locally with Postfix

Apparently it's as simple as just sending an e-mail to a local account, and configuring Postfix to receive mail for the local account. Not too shabby! Original Question This hypothetic server would ...
0
votes
0answers
25 views

Configure Postfix to send emails from my domain name

All my clients use gmail, but would like to use the domain name that I own, say domain.com to send from. I've already figured out how to forward emails that go to domain.com to its respective gmail ...
0
votes
0answers
42 views

Zimbra Admin Page White Screen

I'm having an issue where my zimbra admin page (https://zimbraurl:7071/zimbraAdmin) is only showing a white page, F12 is giving me this error. I'm running version 8.6.0_GA_1191, I've gone though ...
0
votes
0answers
25 views

Postfix error: no SASL authentication mechanisms

I have searched many hours but can not fix the problem. Does anyone can show me the way to fix it? This is my postconf -n postconf: warning: /etc/postfix/master.cf: undefined parameter: ...
0
votes
0answers
22 views

Postfix: I've misconfigured my virtual forwarding, VIRTUAL@com.com is getting my email

So I've setup postfix for say me@example.com, I then forward emails to that address to my gmail as I don't want to store them on the vps. My /etc/postfix/virtual has equivalent; me@example.com ...
0
votes
0answers
26 views

Bypass client and recipient restrictions by domain name

I'm wondering if there is a way I can bypass the restrictions by domain name. For example; mydomain.com will follow the client restrictions listed below normally. mydomain2.com will skip client and ...
0
votes
0answers
21 views

PostFix Issue When Sending Emails through Outlook

I also have the Relay access denied issue and it's really disturbing me. Your help is much appreciated. I can send and receive normally from the web mail. However, when I configure the email on ...
0
votes
2answers
23 views

Catch all forwarders for multiple domains on Postfix (Ubuntu)

I'm trying to figure out catchall forwarding for multiple domains on my ubuntu server. I have it working for a single domain (maindomain) but cannot get the addons 1 and 2 to work. My ...
0
votes
0answers
23 views

Postfix mail server failed email sending(First setup)

I've went through the article below step by step in order to make Postfix up and running on Ubuntu 14.04: PostfixVirtualMailBoxClamSmtpHowto Now in the step where it says to use mail command to ...
0
votes
2answers
38 views

Mail with DKIM Signature gets T_DKIM_INVALID flag by SpamAssassin

I've installed a Debian (jessie) box with postfix and spamassassin. Configured and everything works fine. Except receiving mails with DKIM signatur will produce a flag T_DKIM_INVALID even if the ...