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
16 views

Postfix postmap: fatal: bad string length 137 >1:

Help, i get this error on postfix, what thats mean? postmap: fatal: bad string length 137 > 1: recipient_delimiter = + mailbox_transport = ...
0
votes
0answers
7 views

Postfix SLIBUserRealNameGet failed

My postfix log contains lots of SLIBUserRealNameGet(user=someusername) failed entries. someusernameis either my username which i use for the SASL Login BUT the first letter is missing (example: bob -> ...
1
vote
1answer
8 views

Add timestamp to apache error log

So I keep getting the following error in apache logs: sendmail: fatal: open /etc/postfix/main.cf: No such file or directory And I'm trying to figure out where/when it's being attempted, but I can't ...
-2
votes
0answers
16 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
0answers
17 views

How does postfix work together with dovecot?

I am running postfix and dovecot with virtual domains as described in the section "Postfix virtual ALIAS example: separate domains, UNIX system accounts" here. After i had set up dovecot logging i ...
1
vote
0answers
12 views

Postfix couldn't send mail on Ubuntu VPS server, network unreachable/connection timeout

I have a problem with postfix. When I am trying to send some mail from commandline, I get: Feb 14 12:44:35 some-server postfix/smtp[1022]: connect to ...
0
votes
0answers
14 views

Mail get's registered as spam, everything set up correctly [duplicate]

I'm having serious troubles with getting my email to be not detected as spam. I've tried EVERYTHING. I've tried multiple forums and even there they were out of ideas. So, I have tested almost every ...
0
votes
0answers
21 views

Backscatter problems with postfix

For the past 2 weeks, I hav had nothing but issues with my postfix server getting flooded with "what i now know as" Backscatter. I have tried every option that i have found, to fix this, such as: ...
0
votes
1answer
24 views

How to get rid of spam mails with return-path and from non-existent@mydomain.tld

Over a few days I'm getting several spam mails to my junkmail folder. The return-path and from addresses are always non-existent mailaddresses of my own tld (for example non-existent@mydomain.tld). ...
0
votes
0answers
9 views

Mail Server has stopped working on Ubuntu server 14 since instlling MailScanner

I installed Mail Server on Ubuntu Server 14: (tutorial https://www.linuxcbt.com/products_linuxcbt_postfix_edition) 1. Postfix + dovecot - works properly without MailScanner 2. ClamAV - clamd 3. ...
0
votes
1answer
15 views

Minimal postfix config to receive email

I have do.ma.in with next DNS records: do.ma.in A a.b.c.d mail.do.ma.in A a.b.c.d do.ma.in MX mail.do.ma.in I want to receive one mail from mail.google.com to my postfix to only one ...
0
votes
0answers
23 views

Postfix not forwarding emails, but sends them from command line

I did have postfix working a few months back, then for some reason it stopped working. I only want forwarding emails, not mailboxes. I've setup forwarding using the virtual file, and configuring ...
0
votes
1answer
18 views

Is it possible to send mail to other domain without ssl authentication? [duplicate]

we are using Postfix 2.11.3 on Ubuntu 15.10 Here is configuration file: smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu) biff = no append_dot_mydomain = no readme_directory = no ...
1
vote
1answer
11 views

postfix: restrict forwarding to mail to small list of hosts. No internet routing

We run a postfix mail server which receives mail from a issue tracking system. We do sender based routing, and only 4 next hops are configured. I want to restrict this postfix, so that it never ...
0
votes
0answers
11 views

Dovecot only allow IMAP/POP for specific clients

I have a postfix+dovecot+roundcube server where I authenticate against dovecot from postfix as well: # SASL smtpd_sasl_type = dovecot smtpd_sasl_path = private/auth smtpd_sasl_auth_enable = yes ...
0
votes
1answer
16 views

Postfix not attaching file from script

I'm trying to send an asterisk voice recording out via email using the script found here but instead of sending the file, it just puts the path to the file at the top of the email sent. I believe all ...
4
votes
1answer
907 views

How to log extension header in postfix log?

I have postfix running as a relay server. In normal configuration, postfix does logging for "from" and "to" header. I would like postfix to log additional extension header eg. ...
0
votes
1answer
14 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
25 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
9 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 ...
2
votes
1answer
2k views

How to make a domain receiving email behind cloudflare?

I have a web server hosting multiple domains (centos + postfix + dovcot), one of my domain its dns is hosted on cloudflare (ie. abcd.com), but when I use gmail to send email to a user@abcd.com, ...
0
votes
0answers
18 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 ...
0
votes
2answers
50 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 ...
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
21 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?
1
vote
1answer
27 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. ...
2
votes
2answers
51 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
0answers
18 views

Roundcube Not Fetching E-Mails from /var/mail directory

I recently set Roundcube up along with Postfix and Dovecot. It's all configured correctly as far as I can see. Roundcube sends emails fine but doesn't fetch any, what's strange is I can see the ...
-1
votes
0answers
22 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 ...
1
vote
0answers
19 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 ...
0
votes
0answers
35 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 ...
-2
votes
0answers
14 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 ...
-1
votes
0answers
30 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 = ...
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 ...
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 ...
3
votes
2answers
1k views

Using postfix to relay/forward to gmail

I have set-up postfix on Debian 6 and I would like to forward emails to my gmail account. This is my /etc/postfix/main.cf file: # Debian specific: Specifying a file name will cause the first # line ...
-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
20 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
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
30 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
1answer
272 views

Postfix E-Mail transfer doesn`t work - SASL Authentification failed

I want to use the postfix MTA to send E-mails from my Nagios monitoring system to the contacts. However, i get the follwing error, if a mail will be send May 28 16:20:29 op5-system ...
0
votes
1answer
1k views

Telnet to new SMTP server port 25 times out

I just got Postfix 2.9.6 up and running on a Debian 7 Wheezy server and I can send and receive mail to the outside world but I'm unable to login to the SMTP server. I've tried telnet, first by ...
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 ...
3
votes
1answer
436 views

Postfix - how to redirect email after they are rejected?

I have a problem with spam and postfix + postgray. Generally it works fine, but I have these problems: false-positives. good emails get rejected. Can I configure postfix (and postgray) so that ...
1
vote
2answers
3k views

Postfix cannot authenticate against SASL

My system is Debian 7 aka Wheezy with postfix, courier, and mysql installed. Courier works well and if I issue testsaslauthd -u user@domain -p password -f /var/spool/postfix/var/run/saslauthd/mux -s ...
0
votes
0answers
30 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 ...
1
vote
1answer
23 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 ...