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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-1
votes
1answer
43 views

Can't receive mail from outside

I have two domains hosted on my server and now I want to setup both domains for my mail server, but I'm stuck. Localy it works fine, but when it comes from outside (hotmail, gmail...) it doesn't work. ...
1
vote
1answer
105 views

convert plain text passwords to sha512-crypt in dovecot + postfix's mysql mailbox table

I have an old postfix + dovecot + Roundcube mailserver (mail.domain.Tld). Server clock is loosing time and adjusting it causes dovecot to kill itself, we cannot install more memory, bigger hard-drives,...
2
votes
0answers
38 views

Postfix filter incoming mail

Currently I have a Postfix setup on a CentOS machine. It has multiple virtual_alias_domains and virtual_alias_maps = hash:/etc/postfix/virtual. There are multiple entries in /etc/postfix/virtual like:...
1
vote
1answer
27 views

Minimum postfix config to send mails to a smtps server

I'm trying to send mails with python so I configured a postfix server locally. The python part seems to work as my mails reach the smtpd server. After that, postfix seems to correctly query the MX ...
1
vote
0answers
74 views

Postfix relayhost not working

I have a simple goal: I am setting up a monitoring system and I want this monitoring system to send me emails when a problem with my servers occurs. I have Postfix installed. And I want to use mail, ...
-3
votes
2answers
33 views

How can I check how many emails were sent by Postfix?

I have access to Postfix's mail.log file. In order to tell how many messages were actually sent, how can I check this log file? Is there a specific string that I can grep for.
1
vote
1answer
126 views

Number of issues with postfix, DKIM, and mail getting rejected or bulked

I'm having a number of issues with Postfix and mail sent being rejected or put in the spam/junk folder. I am trying to send emails on behalf of a number of my customers. I've got a postfix server set ...
0
votes
2answers
86 views

postfix allow localhost only local users

I have a little problem. I am offering some clients access to my server in order to execute own scripts (of course in their own chroot environment, etc...). The problem which occured today: Some ...
0
votes
2answers
16 views

In CentOS, unexpected e-mail activity logged in my maillog file

I have CentOS 6.7 with Apache, PHP and CakePHP 3.0 installed. I just checked up on my /var/log/maillog. I have this logged every 5min without fail. Does anyone know who's doing this and why? Or how I ...
0
votes
0answers
41 views

Postfwd not working in ubuntu

I'm trying to configure postfwd with postfix, but not getting any success. Bellow is the list of codes that i performed, not sure if there is anything wrong. Could anyone help me solve this problem? ...
2
votes
1answer
85 views

Sending mails from Gmail through my VPS (postfix, dovecot, postfixadmin)

This problem has been bugging me for a long time now and i want it to be fixed. On my VPS I have set up Postfix working correctly with postfixadmin and dovecot. (I can send (by terminal) and receive ...
3
votes
1answer
320 views

Extend Dovecot/Postfix setup with Calendar/Contact Sync

I am currently running a mailserver with dovecot (maildir) and postfix. Now one user has to sync his contacts and calendar with outlook and iOS using our service. The only way to do this seems to be ...
-1
votes
1answer
28 views

Is this considered as spam email generated by postfix?

I have just checked my email log at /var/log/mail.log Apr 22 22:09:02 server2 postfix/pickup[14310]: D1FCF737C5B0B: uid=0 from=<root> Apr 22 22:09:02 server2 postfix/cleanup[17071]: ...
0
votes
0answers
20 views

No folders on E-Mail using Postfix, Dovecot, RoundCube, all in MySQL

I don't have any folders on RoundCube for users. I have set up RC configs to auto add them and Dovecot should do it too, don't know what I did wrong. I use MySql (MariaDB) on RoundCube and Postfix. ...
0
votes
0answers
13 views

postfix sender_bcc_maps to local mailbox

I have an email relay set up using postfix. I would like to archive emails from a specific sender to a local unix mailbox on the same machine. I have postfix configured using sender_bcc_maps, and it ...
0
votes
0answers
21 views

dovecot does not deliver all messages — why?

I have a postfix/dovecot/sieve/thunderbird configuration. Recently I got a message that my IP would be blacklisted somewhere. I went through the process of recovery (https://sender.office.com/) and ...
0
votes
0answers
48 views

How change “from” of outgoing mail in postfix or dovecot without touching DB or app code?

I have test machine (test.domain.com) with dovecot+postfix both configured to work with database users. I can send and recieve mail (smtp) and check all my folders in UI(imap) with addresses like user@...
0
votes
2answers
44 views

Postfix - How to route outbound mail from multiple local Postfix servers

There are plenty of articles concerning postfix servers and multiple domains, relays and smarthost however they don't seem to address the architecture I have. I have built a small network consisting ...
2
votes
2answers
181 views

Postfix: SSL_accept:error in SSLv2/v3 read client hello A

A couple weeks ago, I noticed the following lines in my logs after moving to a new server with up-to-date software (which, among others, allowed me to finally disable deprecated SSL/TLS versions): ...
0
votes
0answers
7 views

postfix add header based on real recipient

Using postfix, I want to add (or replace) a Reply-To header based upon the recipient. header_checks seemed the answer until I realized the headers being inspected are RFC2822 and don't necessarily ...
0
votes
0answers
71 views

Postfix error Recipient address rejected: User unknown in virtual alias table

I have set up a Postfix email server with Dovecot for IMAP running on FreeBBSD 9.3. I am having an issue where I am unable to send an email to any users on the server from an external domain name. I ...
1
vote
1answer
42 views

Where can I get postfix log example?

I have to write parser for postfix log on ruby. It should find bounce, format it to JSON and send somewhere. I'm not system administrator and don't want to install postfix server on my laptop. Where ...
0
votes
0answers
11 views

Postfix: Sender Credentials Password Storage

A few weeks ago I was trying to implement a gmail-like SMTP relay / aliases system on Postfix here: Postfix: SMTP Relay based on alias (from address) After posting a solution for the question one ...
0
votes
1answer
37 views

Postfix/LMTP rewriting username to number 1

I have a frustrating issue with my mail server and i am confused as which part of the configuration is concerned, please note that both postfix and dovecot are configured to fetch configuration from ...
0
votes
1answer
12 views

Automatically create virtual email for user using postfix

On our website, we have some special users that can be contacted by email. It means that for now, they have a public profile page where after a mouse click their email is visible. Moreover, to log on ...
17
votes
2answers
1k views

Is an IPv6-only MTA possible yet?

Has anyone had tried to run an IPv6-only SMTP engine? Pretty much everybody with any sense has IPv6 configured for major front-end servers. I was curious if anyone had tried to run an IPv6-only MTA ...
2
votes
1answer
67 views

Bad search filter - postfix, OpenLDAP, Saslauthd

I am trying to setup a mail server on Debian Jessie and have come across a problem that's doing my head in. When trying to access OpenLDAP through saslauthd via the command testsaslauthd -u user1 -p ...
1
vote
2answers
30 views

Postfix, setup SMTP for hosted websites

I have a VPS which hosts different domains, and I'm trying to setup SMTP with postfix, so the users can send emails via SMTP from addresses like: user1@site1.com user2@site1.com user3@site2.com I ...
0
votes
2answers
84 views

Mail Server Can't Receive Email But Can Send Email - Postfix, Dovecot, Postgresql

I have server where I want to set up a mail server to let me receive and send email from my domain. I'm currently having a problem where while I am can not receive mails. Sending emails works perfect. ...
1
vote
0answers
79 views

PHP Script sending spams and mail.add_x_header not working

I've got my server hacked lately by some Php64 malware. Since then, I have found a lot of PHP files in my /var/www sub-folders. I am trying to delete each of these or clearing the files when some ...
-2
votes
2answers
49 views

use postfix two mail server with two MX records

Our current setup is a webserver at www.domain.tld (DNS A record) and a mail server (postfix) at mail.domain.tld (DNS MX record) on one dedicated server (IP address 1.2.3.4). Our website sends out ...
1
vote
1answer
40 views

Outgoing emails not being encrypted

I am using postfix to send email. I have mysql set up to manage domains, accounts, and aliases. I have 3 domains set up. One domain is the primary domain and when sending emails to gmail accounts ...
0
votes
1answer
60 views

Postfix sender_dependent_relayhost_maps: do not relay a specific address

Let's say I don't set up relayhost because I want by default to send all the emails by the server itself. Then for some domains in the "FROM", I want to relay to a specific relay. For that I would ...
0
votes
1answer
20 views

Postfix relay: Forward one domain on untouched. All others, redirect

I'm currently using a virtual_maps config with regex to forward all emails sent to my postfix server to one email address /.+@.+/ email@example.com I'd like to make an exception to the forwarding ...
0
votes
0answers
91 views

Postfix rejects messages for only for some recipients

We have working SMTP Postfix server. It receive emails properly, but sending to some recipients is problem. Some recipients are returning this error: postfix/smtpd: NOQUEUE: reject: RCPT from ...
0
votes
0answers
18 views

Google puts my mails to spam [duplicate]

I have a mail server with proper (I think) configuration, but Google puts my mails to the spam folder. I see the following error in the source: Received-SPF: fail (google.com: domain of info@exmaple....
0
votes
0answers
18 views

sending email from ubuntu to *@gmx.de always fails [duplicate]

I have a ubuntu server which has capability of sending emails irrespective of the domains. But when ever i try sending email to say myemail@gmx.de, it fails. I don't see any specific content to ...
-1
votes
2answers
75 views

Port decisions for email setup in 2016 (Ubuntu)

I have a new Ubuntu 14.04 LAMP server with the UFW firewall setup on DigitalOcean. My goal is to add email for use on my phone(iPhone) and laptop(via Roundcube). There is a lot of old information ...
0
votes
2answers
49 views

Someone sending email through my Postfix/Dove

there might have been answers to this many times. But I can't seem to find one that fits my issues so here we go: I've ran an email server on my centos machine for over four months without problem, ...
0
votes
0answers
80 views

Error connecting to IMAP server due to Permission denied

I'm using Postfix as MTA, Dovecot as IMAP server and Squirrel mail for web client. All of them are hosted in centos 6.7. Everything goes fine, but sometimes it shows following error(I face this more ...
0
votes
1answer
75 views

Postfix mail server refuses connections from outside mail servers

I have a Postfix server with SMTP listening on port 587 which cannot be reached by outside mail servers like Gmail and hence I receive this Mail Delivery Failure when sending an email from GMail to ...
0
votes
0answers
12 views

thunderbird drops connection to smtps for only one email account of 5 on the same host

I have a mailserver running on postfix and so far I have successfully configured four of my five email accounts with thunderbird, and they work correctly. However, on the fifth, and last, thunderbird ...
1
vote
0answers
58 views

Is there a way to configure postfix to bypass spam/RBL checks on a particular destination hostname or username?

I'm running Postfix on CentOS 7, a fairly generic implementation, but I do employ some RBL checking on incoming mail. I like using SORBS for example but I have a few clients who seem to have issues ...
1
vote
2answers
54 views

Postfix maildir delivery failed - are my mails lost?

I was facing the problem that postfix could not deliver emails to my home-directory. I have a running Ubuntu 14.04 server and due to some problem with encrypted home-drive postfix was not able to ...
0
votes
1answer
74 views

Restrict sender and recipient with postfix

Sorry for doubling the questions about this topic but there are so many and some are very confusing, some are still "old" format and some others does not match my case. smtpd_restriction_classes = ...
3
votes
1answer
44 views

Making a trusted TLS connection from Postfix client

I'd like to relay outgoing email from my MTA through a 3rd party server (outbound.mailhop.org) for final delivery. I'm wondering how to make the secure connection between the machines 'trusted'. ...
0
votes
2answers
65 views

Postfix - hostname appearing in email address

I have a fresh install of postfix on Ubuntu 14.04 server but the test emails I have sent all include the hostname in the email address. I have searched and found quite a few people with the same ...
0
votes
0answers
15 views

Postfix mail always in spam [duplicate]

I've installed and configured postfix trying to find the best way on the web. This is postfix main.cf: smtpd_tls_security_level = may smtpd_tls_received_header = yes smtpd_tls_session_cache_timeout =...
-1
votes
2answers
83 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 ...
1
vote
1answer
71 views

Postfix: SMTP Relay based on alias (from address)

I recently noticed when I add an alias to a Gmail account they ask me for a remote SMTP server, username and password. Then, whenever I try to send an email using that alias it gets relayed by Gmail ...