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
38 views

Mail server and postfix

On my work we use soft what monitor how much time you was on work and send email to each employee at midnight. But we have ~300 employers, and use public mailservers like gmail. So computer there soft ...
0
votes
1answer
53 views

Sync a Maildir backup to an account

I have a client who created about 20 mailboxes on a server, and they have been using them for a few weeks. So there is mail in them, that can't be lost. Now they recovered a backup of those mailboxes ...
1
vote
1answer
45 views

Postfix not sending email from myorigin

I want email to come from user@example.com but they are currently coming from user@mail.example.com From Postfix documentation: What domain name to use in outbound mail The myorigin ...
0
votes
1answer
25 views

Postfix: Unverified Client host rejected / SASL Logged In

Running Ubuntu, iRedMail, Mysql, Amavis, Spamassassin, Dovecot, Postfix Recently had some unauthorized usage of a postfix server internally from a malware deprecated staging server. I worked on ...
0
votes
1answer
35 views

setup posfix mail server - allow local emails (error 550 5.7.1)

I have from on website and submiting it should sens question email to support on behalf of customer (puting his email addres as sender) Problem is that support does not recieve email but insead ...
0
votes
1answer
56 views

Set PostFix relay_host only for outgoing emails

I setup an architecture with a PostFix mail server and an Encryption gateway. I am relaying all my outgoing SMTP traffic (even mails going from mydomain.com to mydomain.com) to an encryption Gateway ...
0
votes
1answer
41 views

Connection refused by AMAVISD-NEW

I found here many information to set a AWS server on my own. I installed the DKIM patch and it's work great, but now I can't send mails. I had already problems sending mails, but now are deeper. Some ...
0
votes
0answers
39 views

Configure Postfix as backup MX AND local delivery for the same mailbox

I try to explain better... Actually I have a standalone mailserver (CentOS7+postfix+dovecot) that provide some mailboxes for my domains and I want to add a Backup MX. As said in lot of doc (http://...
0
votes
1answer
211 views

SMTP: Received from unknown [xxx.xxx.xxx.xxx] -> but IP does have a valid PTR/RDNS

I got the following problem. I got an smtp-relayserver that collects outgoing mails from other servers and checks them (spam assassin). Now the headers are showing this: Received: from ...
0
votes
1answer
36 views

linux: forward mail in mailbox

Is it possible to forward mail out of a mailbox to another mailbox? I know about .forward, that's not what I want to do(seems like that's 100% of the answers out there). I already have mail in a ...
0
votes
1answer
20 views

Postfix configure <the database with non-UNIX accounts> in local_recipient_maps

What form would the configuration of <the database with non-UNIX accounts> take? # in /etc/postfix/main.cf local_recipient_maps = proxy:unix:passwd.byname, $alias_maps, <the database ...
2
votes
1answer
97 views

550 Verification failed Sender verify failed (in reply to RCPT TO command)

Note: email addresses, domains, and ip addresses have been changed to protect the innocent Current Error: Apr 28 23:47:32 vps01 postfix/smtp[8012]: 2A03D6285EF9: to=<brian@somedomain.com>, ...
2
votes
1answer
61 views

POSTFIX:Must issue a STARTTLS command first. Email not being send from commandline ubuntu [duplicate]

I am trying to send email from the command line from my ubuntu server. So I started configuring the postfix onto my local machine rather than on server. So basically these are steps which I followed: ...
0
votes
0answers
5 views

Gmail relay server not working from one sender 550-5.7.1 [duplicate]

I've got a postfix server set up to relay emails sent to my personal domain to a gmail account. It's been working fine for everything until today when a sender reported that all their emails are being ...
2
votes
1answer
38 views

Postfix not accepting external connections

I have set up a postfix server that works just fine when accessed as localhost. However I cannot make it available from the outside. The relevant configs are as follows: /etc/postfix/main.cf ...
-1
votes
1answer
41 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
77 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
30 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
25 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
61 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
31 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
116 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
72 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
35 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
78 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
228 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
27 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
16 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
12 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
19 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
39 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
32 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
148 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
66 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
37 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
10 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
33 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
55 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
77 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
64 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
44 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
37 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
38 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
82 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 ...