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
38 views

Recomendations for this mail server setup?

EMAIL SERVER SETUP Hey, its my first time using serverfault but I hope the community can help. I am trying to build a secure email system using Linux, Postfix, Dovecot and MySQL. I have read on ...
0
votes
2answers
69 views

email sending speed - how to improve

I am maintaining a server to send email mailings (no spam, of course). The current speed of this machine is approx. 2000 emails per hour. (edit: actually I did a test mailing today, removing the ...
4
votes
1answer
56 views

how do I set up two smtp ports for postfix?

A CentOS 7 server with postfix, dovecot, and mailx needs to accommodate mail being sent through port 465 and received through port 25. What specific syntax and files need to be changed in order to ...
0
votes
1answer
39 views

Understanding Postfix Mail Log

Recently I checked my mail log and found a lot of messages like this (some cipher text have been truncated): Feb 23 11:57:42 postfix/smtpd[32451]: initializing the server-side TLS engine Feb 23 ...
1
vote
1answer
73 views

Increase timeout for Postfix/Cyrus “Command time limit exceeded”?

I have an old OS X Server 10.4.x running Postfix 2.1.5 which is configured to use cyrus as mailbox transport. Here's postconf -n: # postconf -n alias_maps = ...
-3
votes
0answers
30 views

spfpolicy permission denied error

Who should have spfpolicy file's permission? . I'm guessing is that matter since i have this error Mar 2 15:57:51 example postfix/smtpd[28162]: input attribute name: /usr/bin/python: can't open ...
-2
votes
0answers
11 views

Postfix: Different outgoing IPv6 for multiple domain setup

I am serving 3 domains on my linux VPS using Postfix MTA. I have 1 IPv4 and over 65k IPv6 adresses. Because you need correct reverse DNS to avoid the spam filters I want to force Postfix to use 3 ...
1
vote
1answer
28 views

If I create a virtual email alias that forwards a lot of spam email, is my IP at risk of blacklisting or the originating IP address? [duplicate]

A scenario of this would be something like a domain called domain.com has a mailserver set up that forwards all email sent to info@domain.com to person@gmail.com. If someone sends a lot of spam to ...
-4
votes
0answers
46 views

Setting up High Performance SMTP to send 300,000 mails daily [on hold]

I'm working on a project for a salesforce app for a 15 years old portal with a massive user base of around 3 Million subscribers and growing. The App sends our around 10,000 to 30,000 Transactional ...
0
votes
2answers
80 views

postfix mails (works) to all but my domain on debian

I have set up a redmine server that I got from turnkey linux. Mail more-or-less works out of the box. I can mail to anyone that is not in my domain. Let me explain: If I run the mail command from ...
1
vote
1answer
43 views

Allowing Postfix Relaying For Certain Hosts [duplicate]

I have Postfix setup in a test environment, segregated from our LAN, and relaying for hosts in the test environment. Originally, I had all outbound email funneling through procmail and into a single ...
1
vote
0answers
24 views

Applying filter on mail from specific subnet in postfix

I'm trying to get the following to work: We have a postfix relay on the edge of our network, accepting all mail from our internal LAN & DMZ. What we are trying to get to work is limiting the ...
0
votes
0answers
16 views

Exchange with Postfix MX for technical accounts in same DOMAIN

I have organization configured with Exchange 2007 server with many technical accounts. I would like to migrate technical account to Postfix server with same domain At the moment my structure is: ...
0
votes
1answer
20 views

opendkim to sign all '*' users in a domain

How do you get opendkim to sign for all users in a domain? *@exmailer.com exmailmap in the signing table is not working for me. error: opendkim[1565]: 573D4A0D3D: no signing table match for ...
4
votes
1answer
40 views

Roundcube sends e-mails without subject

I have recently set up a mail server that consists of postfix and dovecot. Yesterday I added nginx and roundcube to the mix. SPF, DKIM, DMARC, rDNS records are all done. Gmail treats my mail as valid ...
6
votes
1answer
40 views

postfix performance with lists in main.cf

For defining a list of items to assign to many different options in postfix, you can either use a comma separated list like this: relay_domains = example.com,example.net,example.org or a hash map ...
0
votes
1answer
34 views

CentOS email setup for Wordpress

I am moving an old Wordpress install to a new CentOS LEMP stack VPS. I want to set up email for the new VPS. It came with sendmail installed by default but I find it to be overkill. I just need a ...
-2
votes
0answers
18 views

Online mail server settings checking service [closed]

I want check my mail server for many settings (MX, PTR, A, dkim, spf, OpenRelay, valid HELO, RBL status and more and more..) i recieve mail to checkme@check_my_server.tld and get reply with detail ...
1
vote
0answers
38 views

Postfix not following MX, local delivery LDAP

Before explaining the problem, this is the setup: We run 5 servers, 2 in Montevideo [Uruguay], 3 in the US, on each server we have clients (domains, mail accounts, and obviously local logins) the LDAP ...
-1
votes
2answers
41 views

Postfix, I'm receiving a lot of undelivered mails (logs inside)

Some days I receive a lot of Undelivered emails, it's like my server is used as relay. But I don't know if that's only backscatter emails or my server is really used as a relay. Here is what I found ...
1
vote
1answer
25 views

Postfix [Courier, Maildir] Disable Quota

I set up Postfix under Debian Wheezy with MySQL and virtual users using this tutorial. Thunderbird is recently giving me alerts "You exceeded your mail quota" and saving/moving emails is denied. The ...
1
vote
1answer
34 views

Postfix - relay locally generated mail but accept mail incoming from GApps for the same domain

I know the way to disable all local delivery is to remove the domain from "mydestination", which will cause all mail to be relayed through whatever relay I setup. But I want postfix to accept all mail ...
0
votes
1answer
54 views

Dovecot / Postfix / SASL: Connect to /var/run/dovecot/auth-client failed: Permission denied

Dovecot / Postfix configuration is not working properly on my server : after several checks, I understand that Imap services are operationnal using local or desktop clients Postfix is listening, ...
2
votes
1answer
60 views
+50

SASL PLAIN authenticating with primary domain, but not with virtual domain

Postfix + dovecot and sasl. Works so far with 1 domain. Added a virtual domain. Incoming mail for this works. Outgoing however has SASL authentication failing. Why does it fail I don't know. ...
-4
votes
0answers
18 views

Unable to hide sent email headers using postfix [closed]

The guide I followed is here: https://major.io/2013/04/14/remove-sensitive-information-from-email-headers-with-postfix/ No matter what I do I cannot manage to hide specific headers, most importantly ...
-1
votes
0answers
15 views

postfix mail server spam allboutspam SPAMAssassin batv [closed]

i have 64bit centos server with postfix service with virtualmin panel i checked my website with allaboutspam.com and most test is green, one is yellow and one is red . yellow error how can i fix ...
1
vote
0answers
14 views

Conditional rewrite Postfix headers [duplicate]

On my website I have a form that is send to me by e-mail once filled out. The form mails with its own email address but has a Reply-to to the people who have filled out the form. In Postfix I want to ...
1
vote
1answer
27 views

Two servers in domain but only one responsible for sending emails

I have two Debian servers: web.example.com - LAMP web server mail.example.com - mail server with postfix, dovecot and mysql based user directories, auth required Now I want to setup web.example.com ...
-1
votes
1answer
57 views

Dovecot SMTPD Sasl auth error: fatal: no SASL authentication mechanisms

I've googled this error and nothing I've read/tried works - anyone know what it is Error log: Feb 23 22:35:36 localhost postfix/smtpd[5278]: connect from localhost.localdomain[127.0.0.1] Feb 23 ...
-2
votes
0answers
19 views

Postfix reject to deliver email through SMTP to any domain

My postfix server denied to send email to any domain except local one. Here is test result using telnet. telnet mail.emailhost.com 25 Trying 128.199.XXX.XXX... Connected to mail.emailhost. ...
-1
votes
0answers
17 views

Mail services disabled but server still sends spam [duplicate]

A domain on my host was sending spam e-mails. It was an outdated joomla version and there were everywhere in their web directories php bot spam scripts. From my side I disabled the php's mail() ...
0
votes
0answers
83 views

postfix with dovecot : fatal: no SASL authentication mechanisms

I setup a mail server using postfix and dovecot . I used pro linux system administration book by James Turnbull, but I got following error when try to test mail server with swaks command. swaks -tls ...
0
votes
4answers
38 views

Set up the right mx records for postfix/dovecot server

I recently set up a postfix/dovecot mail-server on my VPS (OVH), but for some reason I cannot receive e-mail through it. Is anyone able to check my DNS-records and my Postfix/dovecot configuration to ...
1
vote
1answer
23 views

postfix destination full/busy/error try another destination

Does anyone know if it is possible to setup postfix with a destination for a domain. If that destination (which is also running postfix) can't accept the mail because it's disk is full or it is ...
2
votes
2answers
40 views

PHP emails, Postfix and Message Queue

I've been running a web platform that needs to send a considerable amount of emails daily. At the implementation date I and my partner decided to setup Postfix on the server and use Swift Mailer class ...
0
votes
1answer
36 views

Can't login via IMAP after creating user via useradd command

I'm trying to create a new user (that can access email) with useradd. My command is useradd --shell /bin/bash --create-home --password <password> <username> However, I cannot login to ...
1
vote
0answers
29 views

Postfix, dovecot, postfixadmin - duplicated maildir [duplicate]

I've configured postfix with dovecot and postfix admin with mysql based user storage. I changed maildir to /var/mail /etc/dovecot/dovecot.conf: mail_location = ...
0
votes
3answers
43 views

How to force a own set of ciphers in Postfix 2.11?

I would like to force a own set of TLS cipher suites rather than use the Postfix built in ones. My desired set of ciphers is (taken from nginx configuration): ...
-2
votes
1answer
36 views

Postfix POP3 NOQUEUE: reject: RCPT error

I am getting an NOQUEUE: reject: RCPT error when trying to send mail via POP3 and Postfix (note: IMAP works fine). Feb 21 06:57:04 r2d2 dovecot: pop3(br@telecomm.com): Disconnected: Logged out ...
1
vote
2answers
63 views

Can't connect with telnet from external ip

I have a postfix server running on a kimsufi VPS, i installed roundcube on it, and everything is ok. The problem is, when i try to connect from another server, i have a timeout : telnet whys.fr 25 ...
5
votes
1answer
94 views

Postfix stops picking up mails at night

Our postfix system stops sending mails at night. Every night at 2am it stops picking up mails. The server is a monitoring server, which sends a lot of mails per day. /bin/mail drops the mails in the ...
1
vote
1answer
26 views

Postfix using virtual.db file instead of mysql table

I have specified virtual_alias_maps = mysql:/etc/postfix/mysql-virtual-alias-maps.cf, but still I got errors like warning: hash:/etc/postfix/virtual is unavailable. open database ...
1
vote
1answer
55 views

How to disable SSLv3 in Postfix 2.11?

I just noticed (by some online check tools) that my mailserver may allow SSLv3 and updated my configuration. My current config in Postfix 2.11.2: # inbound smtpd_tls_security_level = may ...
0
votes
1answer
23 views

Spamassassin is conflicting with postifx

I am trying to install spamassassin. But it seems to be conflicting with POSTFIX. When I restart spamassassin I get the following error code: /usr/sbin/postconf: fatal: file /etc/postfix/master.cf: ...
0
votes
1answer
20 views

What happens to local email when user does not exist

I'm running a server with postfix to handle email sent from a php website. Email for the domain is handled by another server, however due to the fact that this domain name has been entered in ...
-1
votes
0answers
37 views

DOVECOT: Access denied

I am trying to set up a mail server following this tutorial: http://www.starbridge.org/spip/spip.php?article12#dovecot-sasl-lda-imap-et-sieve I cannot receive emails on my email client (thunderbird). ...
-2
votes
0answers
28 views

Spamassassin filter exception

Currently we have set SMTP for our network (without auth and SASL from remote) and if I send for example .bat files packed in ZIP (of course without viruses), then email back with an error message: ...
0
votes
1answer
28 views

How filter catchall email account based on recipient address [closed]

// Background info I am building a chrome plugin that forwards private messages from websites to your email and allows your email replies to be returned through the various sites private message ...
4
votes
2answers
67 views

postfix “User doesn't exist” but user does exist

I am having a strange situation which I could not find elsewhere. When I send mail to rcook on my local machine, I'm seeing this in the syslog: Feb 16 20:27:14 linode postfix/pickup[1305]: ...
-1
votes
0answers
19 views

Postfix relayhost and local users [duplicate]

I'm attempting to migrate mail users from a local server to a google-apps account. I want to move a trial set of users over. At the moment the users are using our local server for SMTP purposes, if ...