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
3answers
87 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
103 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
148 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
120 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
79 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
100 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
76 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
34 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
1answer
102 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). ...
0
votes
1answer
49 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
169 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]: ...
0
votes
1answer
35 views

I guess that my mail server is unprotected and spammers are using my mail server to spam myself [duplicate]

Since I switch to my own mail server (I folowed this two tutorials: https://www.linode.com/docs/email/postfix/email-with-postfix-dovecot-and-mysql and ...
0
votes
1answer
29 views

localhost in postfix's mydestination

I noticed that many tutorials on the web specify the mydestination variable of postfix like this: mydestination = localhost, localhost.myhostname, myhostname, mydomain1.com, mydomain2.com Note: ...
2
votes
1answer
83 views

Postfix doesn't start on reboot

I'm on CentOS 7 and as far as I understand, all that is needed for Postfix to start on reboot is to run systemctl enable postfix.service However, that doesn't work for me. After a reboot, systemctl ...
1
vote
2answers
58 views

Is it safe to remove write permission from postfix main.cf?

While I track down what facility is re/setting mydomain to "local" I'd like turn main.cf into a read-only permissioned file. At present the permissions are 644, owned by root. Is that safe to do? ...
1
vote
1answer
48 views

Postfix SMTP recipient filter not filtering

I have setup Postfix with a list of blacklisted recipients, so that the Postfix server should not relay mail to them (smtpd_recipient_access parameter in main.cf). The addresses are properly listed ...
2
votes
1answer
33 views

Postfix replaces “from” when using simple filtering

I'm trying to configure Postfix (on a RHEL 6.5) to modify the content of incoming messages and forward the emails to a remote server. I used a Perl script piped to Postfix to modify the content, and ...
1
vote
1answer
32 views

smtpd_recipient_restrictions works but not always

I have POSTFIX set up to filter certain email addresses. The main.cf file contains: smtpd_recipient_restrictions = check_recipient_access hash:/etc/postfix/blacklist, permit_mynetworks, ...
-1
votes
1answer
157 views

Postfix- Host or domain name not found - looking up wrong domain name

I want to know where i can configure the following. I want postfix to lookup the host: myexample.com, but instead it is looking up Host-Wordpress-01. Which is my digitalocean droplets name. ...
2
votes
1answer
418 views

NOQUEUE: reject: RCPT from on freebsd and postfix

I am building a server using this config -> http://www.purplehat.org/?page_id=4 and when trying to test basic email capabilities I get -> NOQUEUE: reject: RCPT from when try to send a test email. ...
2
votes
1answer
57 views

configure Postfix to send diferent user through same relay depending on domain

I need to configure postfix to send through a relay server but with different user depending on the sender domain. For example: domain1.com userA passwordA domain2.com userB passwordB I need to ...
1
vote
1answer
92 views

postfix | sender_bcc_maps for specific emails (with attach)

How, if possible, copy all incoming mail with attachments to mybackup@example.net If I use sender_bcc_map = type:table - all mails will be copied, without attachments too. I do not need that, I just ...
0
votes
2answers
271 views

Postfix 2.9 or sendmail, outgoing spam prevention (check if sender exists)

Operating System: Linux Ubuntu 12.04 TLS Context: Plesk 11.5 Utility: Postfix 2.9.6 (updates restricted by Plesk 11.5 distribution) I would like Postfix to check the 'sender' field of every ...
0
votes
1answer
103 views

Postfix/OpenDKIM not signing PHP sent emails

We installed SPF, DKIM, and DMARC records for email security/verifiability. When sending through the console or a mail client like Outlook or Mac's Mail it processes fully and has all three pass. ...
1
vote
1answer
81 views

Postfix smarthost, allow relay by dynamic IP

I have several servers (web, mysql, java) that have postfix installed which are set up to relay to a smarthost postfix server. DYNAMIC IP STATIC IP INTERNET ...
-1
votes
1answer
33 views

POSTFIX Not delivering mail to one box

One of my users has been experiencing a weird problem. He is on a distribution list and does not receive any of these emails. His mailbox is spelled correctly in the mail headers, and other employees ...
6
votes
1answer
985 views

amavis cronjob throwing an error out of nowhere

Can someone explain why amavis cronjob is suddenly trowing the following error? Cron <amavis@bee> test -e /usr/sbin/amavisd-new-cronjob && /usr/sbin/amavisd-new-cronjob sa-sync rules: ...
3
votes
1answer
156 views

Configure Barracuda Spam Filter behind Postfix to use client IP when do RBL-checking

I have the following setup: Internet -> Postfix Mail setup as Proxy -> Barracuda Spam Filter -> Microsoft Exchange I have tried searching through the documentation and configuration panels to see ...
2
votes
2answers
175 views

What is telling me postfix with this error: warning: connect #n to subsystem private/proxymap: Connection refused

Can anyone tell me what's postfix telling me with this error? Feb 9 13:08:59 hostname postfix/postfix-script[23077]: starting the Postfix mail system Feb 9 13:08:59 hostname postfix/master[23079]: ...
1
vote
1answer
150 views

How to interpret postfix logs on Ubuntu

I just installed postfix on my server which runs Ubuntu 14.04.1 LTS. I am a little confused as to how I should interpret the postfix logs located at /var/log/mail.log. Firstly, one of the reasons I ...
-2
votes
1answer
88 views

How can I avoid being classified as spammer when I forward mail to a gmail account? [duplicate]

Update: The link pointed to by the "duplicate" initially didn't seem like the same problem to me, because the post talked about blacklisted "domains" not blacklisted "IP addresses." However the main ...
1
vote
1answer
65 views

Postfix doesnt apply virtual mailbox rules when external domain sends email

I set up my Postfix to use virtual mailboxes. When I telnet the mail server and send an email from that, it works flawlessly (both when on the mail server and telnetting from a remote client). The ...
2
votes
1answer
63 views

How can postfix hash: databases be replaced by static: or inline:?

What is the syntax to replace a postfix hash-Database, for example domain.tld PREPEND my-header: foobar with a static map? docs define it as Example: "inline:{ key=value, { key = text with ...
2
votes
2answers
102 views

Debugging a Postfix Saslauthd PAM-PGsql authentication failure

I've set up pam-pgsql to lookup passwords in my database for Postfix via Saslauthd. I can test credentials using the command line: $ sudo testsaslauthd -u user@email.com -p password 0: NO ...
0
votes
1answer
29 views

Dynamically set SRS_DOMAIN

I have a mailserver forwarding mail and using postsrsd for SRS. Since postsrsd uses postfix's mydomain setting to alter the Return-Path, is there a way to set the SRS_DOMAIN for forwarded mail based ...
-1
votes
1answer
29 views

spf record fail on forwarded mail

I've set up Postfix, Dovecot and MySQL according to this tutorial from linode. In the virtual aliases table I have an account which forwards to my gmail. Because these messages are then being ...
-2
votes
2answers
72 views

Postfix - How to prevent external clients from using my server as a relay? [closed]

I have a postfix server installed on Ubuntu 14.04. A PHP script running on the machine uses it to send outgoing email. Additionally, I use postfix to receive mail sent to a local account, which is ...
-1
votes
1answer
36 views

postfix conditional canonical maps

i have a postfix MX and i need to make the following logic: if a message arrives with aaa@example.com in the rcpt to header, then i need to change the from header to bbb@example.com. any ...
1
vote
1answer
33 views

How do I know if Postfix has MySQL/PostgreSQL support?

I'm not sure if my Postfix installation has MySQL or PostgreSQL support. How do I find out?
0
votes
1answer
70 views

DKIM signing key

when I create DKIM key like this: sudo opendkim-genkey -s mail -d example.com -s specifies the selector and -d the domain, this command will create two files, mail.private is our private key ...
1
vote
1answer
48 views

mail command : does content-filter in postfix works?

I use Postfix in my machine (linux). When i send a mail to a local user with telnet localhost 25 in command line, my mail is parsed by a content-filter (for example: spamassassin) => no problem. But ...
3
votes
1answer
163 views

Restricting outgoing mail to specific domains in From Address using Postfix

For reasons that make me want to hurt myself, an application I am required to support has the ability to send mail using a 'MAIL FROM' address of any domain. Because I am unable to lock down the ...
2
votes
1answer
122 views

make Postfix to bcc mail twice

I am running a Postfix mail-server, to scan mails I forward them to amavis, after the scanning amavis forward the mail to ciphermail (a program that automatically de- and encrypts emails). Ciphermail ...
-1
votes
3answers
75 views

Postfix setup from domain [duplicate]

I'm trying to sending email from nagios monitoring to some email addresses. But I have a problem with setup my from domain when I'm sending an email every time my from email address seems like this: ...
0
votes
1answer
309 views

Postfix: fatal: no SASL authentication mechanisms (unable to telnet)

I am setting up Postfix with Dovecot for a mail solution. When I try to telnet localhost 25 the connection closes. The error seen in the log is: postfix/smtpd[22958]: initializing the server-side ...
1
vote
1answer
204 views

Authentication with Dovecot, SHA512, and salts

I have a database that has a username, password, and password salt in it. The password is hashed using SHA512. The data in my users database looks like this: user = testuser password_hash = ...
0
votes
1answer
272 views

Postfix: As a smarthost, how can I limit incoming mail to sender domain and sender IP?

I'm running a Postfix+Dovecot service on Centos 7 with a few unrelated virtual domains. This same Postfix server is also set as a smarthost (relay) for IP 192.0.2.2 and 203.0.113.2. Right now, ...
1
vote
1answer
226 views

Postfix mail sent to SPAM in Yahoo and Outlook (SPF, DKIM, DMARC also configured)

I have implemented DMARC in out email server and got the response from some of the email domains as follows, <?xml version="1.0"?> <feedback> <report_metadata> ...
0
votes
1answer
65 views

Make postfix trigger a php script using always_bcc

I have been having a VERY hard time with this, have searched everywhere, and in utter desperation am posting this question. I am using postfix and dovecot on ubuntu 12.04. I am trying very hard to ...
2
votes
2answers
110 views

Forward email to other servers if the recipient doesn't exist in alias map

This is the first time I am starting to write a more complex postfix as I hate setting up mail settings without knowing what to do. But right now I am required to do. Here the setting: For internal ...