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
0answers
50 views

Postfix bouncing emails submitted through pipe

I have a Postfix with a piped content filter which tries to locally deliver the messages before sending them out, resulting in a bounce notification for each event. According to the Postfix ...
2
votes
1answer
366 views

Creating tickets with Email in osTicket

I have just installed an osTicket server for our company and I have problem with creating tickets from email. I'm using Postfix as my SMTP server and Dovecot as my IMAP server. In osTicket panel I ...
1
vote
2answers
116 views

DNS resolving error in postfix mail queue

mailq gives me this error: F2E7B32820F3 3549 Wed Feb 17 12:15:50 "www-data@info"@hivemind.ru (host mxs.mail.ru[94.100.180.150] said: 421 Problem resolving DNS for domain info"@hivemind.ru (...
0
votes
1answer
27 views

Postfix: Send all mailq messages to a single file

Wouldn't be nice to create a single file by appending all messages from mailq. For instance for a single message you would add postcat -q 91D65348E0EA > listofallmessages then for the next you ...
0
votes
2answers
37 views

Postfix: How to check from what script the message has been sent?

Does postfix know the origin script that sent the email somehow? Is it possible to track the web scripts that sent the email? I am on a web farm having sites A, B, C. Site A has scripts a.php, site ...
1
vote
0answers
74 views

Postfix with Dovecot Disconnects after STARTTLS on Port 25

I am having a lot of trouble setting up the Postfix to do STARTTLS. It seems that I could successfully send outgoing mail using Thunderbird. However, I can't seem to get the Postman SMTP for Wordpress ...
0
votes
1answer
23 views

Open relay or some other issue?

I am running a dovecot/postfix server with virtual users/aliases. According to tools such as http://www.mailradar.com/openrelay/ I do not have any open relays. However, I am getting a lot of records ...
3
votes
3answers
249 views

Gmail flagging Dovecot email as insecure

I thought I successfully secured my Postfix/Dovecot email server. I have a signed certificate from LetsEncrypt, which is valid for my domain. Sending & receiving works fine, but since Gmail ...
-2
votes
1answer
79 views

can't telnet localhost 25 on centos [duplicate]

i have done to install and config the postfix but when i test to telnet i get the result Trying ::1... telnet: connect to address ::1: Connection refused Trying 127.0.0.1... telnet: connect to ...
1
vote
0answers
48 views

postfix empty from when redirecting to return-path

We are sending mail from our server via postfix, and capturing bounces in an inbox via return-path. We're seeing an odd situation where sometimes the bounce rejection appears to happen directly during ...
1
vote
1answer
27 views

Dovecot/Sieve adds extra / in file path

I'm putting the finishing touches on a Postfix/Dovecot/Postgres server (before attempting to rebuild it from scratch based on notes alone), and I have everything working except for one thing I can't ...
0
votes
0answers
66 views

Postfix SASL server said: 535 5.7.8 Error: authentication failed:

I have a mail server (running on Ubuntu server 12.04) that worked fine until a couple of months ago. After I forgot to renew my cacert.org free certificate, I created a new certificate and loaded it ...
0
votes
0answers
59 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
67 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 ...
0
votes
1answer
39 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 = lmtp:unix:/var/lib/imap/socket/...
0
votes
0answers
90 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
256 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 gmail-smtp-in.l.google.com[2a00:1450:4010:c07::1a]...
0
votes
0answers
16 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
52 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
83 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). I'...
0
votes
1answer
29 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
32 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 main....
0
votes
1answer
67 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 ...
0
votes
0answers
25 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 ...
1
vote
1answer
17 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
1answer
23 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 ...
0
votes
1answer
19 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
15 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, example....
0
votes
0answers
39 views

set X-Original-To in postfix virtual forward

I am using postfix virtual alias map to forward email sent to our support email info@ourdomain.com to Zendesk at support@ourdomain.zendesk.com Unfortunately there is no information in the email ...
1
vote
1answer
70 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
256 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
56 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 ...
2
votes
1answer
76 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
34 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
665 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. //TuxX.zip//...
0
votes
2answers
105 views

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
36 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
15 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
42 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
2answers
67 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 ...
2
votes
0answers
19 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, manager2@...
1
vote
1answer
100 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
36 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
45 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
100 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
35 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
1answer
17 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: pgsql:/etc/postfix/pgsql/relay_domains.cf(0,lock|...
3
votes
2answers
145 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 (Compress:...
0
votes
1answer
385 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
41 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: ...