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
13 views

Blocking banned mail attachments in zip

I have a Zimbra server setup and am having trouble with emails that contains .exe files within .zip attachments. All .exe attachments are blocked but they are getting through when they are zipped. Is ...
1
vote
1answer
17 views

How to stop a loop I have introduced in a transitional postfix-spamassassin-dovecot setup

I am at the early stages of the steep email handling learning curve, gentleness appreciated :-). I have a setup with postfix and dovecot. I am trying to migrate my email server (domain example.com) ...
-3
votes
1answer
27 views

Rename “MAILER-DAEMON@” from postfix/dovecot [on hold]

Have some method of change MAILER-DAEMON@example.com to postmaster@example.com or at least mailer-daemon@example.com in Postfix/Dovecot? I sought some forms in the Postfix configuration, including ...
0
votes
0answers
8 views

What is the best way to harden a postfix null client on an exploited php webserver?

We use postfix as a null client to send out mail from a php webserver via sendmail. We host our incoming mail servers elsewhere and use a SPF record to authorise the server to send emails from our ...
0
votes
1answer
11 views

What is a saslpasswd2 domain?

What does saslpasswd2 do, in particular, what is the domain option for: -u domain use domain for user domain (realm). UPDATE: Suppose, I: smtp login to smtp.mydomain.com, as ...
0
votes
1answer
16 views

What FQDN should I use for Postfix setup in Satellite Mode on Ubuntu VM on VirtualBox?

I am getting lost with trying to configure Postfix on a Ubuntu 14.04 VM running on VirtualBox. The VirtualBox has 2 NICs: 1)NAT and is Internet access through my computer running the VM and ...
-1
votes
0answers
15 views

Limit php mail to local delivery only cPanel /WHM [on hold]

cPanel based hosting - I need to configure the servers so any php based email will only deliver to local email accounts. This is so things like contact forms will work but php mail can't be used to ...
2
votes
1answer
25 views

How to make Postfix skipping some recipient's hosts as unreachable?

I would be really happy to learn how to make Postfix to "remember" that certain host is unreachable at the moment, so it would be good if we didn't perform any new connection attempts to this host for ...
0
votes
1answer
30 views

Postfix completely ignores relayhost setting in main.cf

I am having trouble sending email to my relay host. All mail is being directly delivered. postconf -n: alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases append_dot_mydomain = no biff ...
0
votes
1answer
25 views

Postfix virtual domains: how to send emails to local or not destination with the corresponding virtual domain of every virtual recipient?

I need help to configure a postfix in a server as recipient and sender for many virtual domains and sub-domains. I want every email sent from any local recipient of this server reaches its destination ...
0
votes
0answers
25 views

HTTP Error: Connection to server lost

We had a server that was running Postfix / Dovecot and Zarafa just fine, and the database (MySQL) crashed. So we after some thoughts we just decided that we drop that database and lose emails. Thus ...
1
vote
1answer
12 views

match local recipients in virtual_alias_maps

I want to redirect all local mail by specifying an address in virtual_alias_maps file. It is possible to match recipients with regexp, but it's too complex. They can be: no domain (root etc.) ...
-3
votes
2answers
20 views

postfix not respecting aliases [on hold]

I have a small server that is suposed configured to use my gmail account to send emails about the readings the borad takes I can send emails all right but I have noticed something strange - I ...
1
vote
1answer
26 views

postfix logs show dodgy connections

I have regular connections from an IP that appears in OpenBL list and I would like to understand what it does. If it failed at authentication phase, I would get auth errors (and he would be banned by ...
1
vote
1answer
26 views

Explain user@domain format of postfix $virtual_mailbox_maps parameter value

I am trying to setup a mail server using this article. Basically using postfix & dovecot. I have a test setup which works, but I don't understand some (a lot) of stuff and am trying to rectify ...
2
votes
1answer
16 views

postfix alias maildir delivering to ~user/Maildir/ instead of ~user/Maildir/alias/

My environment: # cat /etc/redhat-release Red Hat Enterprise Linux Server release 6.6 (Santiago) # rpm -q postfix postfix-2.6.6-6.el6_5.i686 # I switched home_mailbox from Mailbox to Maildir/: # ...
-2
votes
0answers
18 views

Public SMPTS Relays [closed]

My ISP started blocking all traffic from and to port 25. Now I get a bunch of errors like this: Jun 23 09:45:01 nuts postfix/smtp[7937]: connect to ...
0
votes
0answers
14 views

gpg-mailgate removes content of e-mails

I have installed gpg-mailgate from this repository on my server as stated in the INSTALL file. It does seem to work, partially. As it would be expected, when sending an e-mail to an account on my ...
-2
votes
0answers
17 views

Alter email body before send - postfix or sendmail [closed]

I'm looking for a solution where I can add html both before and after the body of email. Basic usage for this is to add stationery to outgoing emails autimatically based on address etc I've looked ...
-2
votes
1answer
22 views

Another private/auth not found thread in postfix-dovecot combo

If I try to send mails through my relay I get: warning: SASL: Connect to private/auth_dovecot failed: No such file or directory fatal: no SASL authentication mechanisms The auth part in main.cf: ...
0
votes
1answer
16 views

Postfix virtual_mailbox_maps mysql lookup on 2 different DBs

I'm trying to configure a postfix server to receive email for 2 different domains (no problem so far). But the users/mailboxes for both domains need to be looked up in 2 different tables on 2 ...
3
votes
1answer
25 views

Acces Denied when implementing policies in (postfix + policyd2)

I'm trying to use postfix + policyd2 to limit amount of outgoing emails. But when implementing policyd2 policies i get Access denied - no mater what i do i get denied. Postfix version 2.11.4 ...
2
votes
0answers
27 views

Postfix: 'Relay access denied' - all incoming mail is rejected

I am testing my PostFix setup by sending email from my gmail account to an account on a virtual domain. Postfix's response is invariably: NOQUEUE: reject: RCPT from ...
-2
votes
1answer
26 views

Cpanel update 11.50.0 uninstalls postfix [closed]

I have been running postfix as my mta on a whm/cpanel config for several years without issue. Upon the latest cpanel update to 11.50.0 (build 12) postfix is being uninstalled in the background, ...
-1
votes
4answers
90 views

Why are many mail servers using subdomains like mail.example.com?

I'm just setting up dovecat and postfix for the first time and wondering why so many companies are using subdomains for IMAP and SMTP like smtp.mail.example.com and imap.mail.example.com? What are ...
1
vote
0answers
18 views

Updated hostname of server but old hostname still appearing appearing in Postfix logs?

Been having some trouble with emails bouncing when being sent to certain addresses from our CentOS 6.4 Media Temple DV server. I am no expert but after checking the mail logs it appeared that they ...
-2
votes
1answer
13 views

TLS for outgoing mail (following ISPmail) not working

I built my mailserver on a vserver after the ISPmail tutorial (https://workaround.org/ispmail/wheezy) (which is awesome). The only remaining problem is that it does not seem to use TLS with outgoing ...
0
votes
1answer
17 views

Postfix not receiving mail for virtual domain from outside (only locally)

I have postfix mail server running at mail.123.com (ip eg 1.1.1.1), then I have site books.com (ip eg 2.2.2.2) and it's DNS records like this: MX record as mail.123.com A record mail.books.com same ...
0
votes
2answers
22 views

Postfix forwarding all email regardless of restrictions

I'm trying to set up Postfix to relay mail only if it's coming from localhost, AND only if it's going to a certain domain. However, as soon as I've specified a relay server, everything (except local ...
1
vote
2answers
31 views

How to verify if my postfix uses really TLS to send outgoing mails?

I successfully installed Postfix on my VPS. I would like to send encrypted email. I installed all certificates and private keys and set my conf file: smtpd_tls_key_file = <path to my private ...
1
vote
1answer
33 views

Postfix behind a relay to handle incoming and outgoing mail with /etc/aliases

I'm trying to setup postfix on a Linux machine (Debian 8 with Postfix 2.11). But I have some troubles getting /etc/aliases to work correctly. The setup is as follows: A MS Exchange server is the ...
-1
votes
0answers
29 views

Postfix+Dovecot: Fatal: No SASL authentication mechanisms [duplicate]

I didn't find any suitable answer anywhere on this web-site. I found ony answers for Cyrus or unsuitable answers. I'm configuring test mailserver, based on Postfix, Dovecot v.2.1.7, SASL and MySQL. ...
-2
votes
1answer
40 views

Postfix setup for LAN only [closed]

I have Ubuntu on which I installed Postfix. Postfix packet is up and running. I'm trying to make a simple e-mail system to work between a few LAN computers. Basically, I need to have some outlook ...
1
vote
0answers
51 views

Mail marked as spam (Gmail/Hotmail): IP not on blacklist, DKIM Valid, SPF Valid and DMARC valid

I'm trying to send mail from my own domain (which is 15 days old now) but I'm having some troubles. Check the following mail body: Delivered-To: ------@gmail.com Received: by 10.25.89.200 with SMTP ...
1
vote
1answer
27 views

Mails not being received. status=deferred (lost connection with 127.0.0.1

I have a MiaB box with about 30 email boxes. This errror pops up in /var/log/mail.err but with no other information. WARNING! Error in process_request eval block: /usr/sbin/spampd: write error ...
0
votes
1answer
12 views

Postfix - Allow authenticated connections on encrypted connection only

I currently have Postfix setup to deliver mail to local users without authenticating (to receive incoming email from other SMTP servers for my local users), and with SASL so my users can authenticate ...
0
votes
1answer
25 views

Dovecot reports no SASL authentication mechanisms

On my way to setup a mail server with Postfix and Dovecot on Ubuntu, I can now send mails to other domains. However, I cannot receive from others. In the logs it reads Jun 14 09:34:35 ...
-2
votes
1answer
21 views

postfix fatal: specify a password table via the `smtp_sasl_password_maps' configuration parameter

I'm using webmin and postfix to send emails, and I can't send emails, I checked the logs in the file: /var/log/maillog anf found the following error: fatal: specify a password table via the ...
0
votes
1answer
24 views

postfix not routing mail to remote hosts

I'm trying to setup postfix to be able to send/receive mail, I'm able to receive messages, but when I send to any other domain other than my domain name which is setup in postfix, I get the following ...
-1
votes
0answers
41 views

Fail2Ban / IPTables does not block IPs

My server : Debian Wheezy 7.8, Postfix/Dovecot, Fail2Ban/IPTables I've postfix attacks : /var/log/mail.warn Jun 12 08:03:45 myserver postfix/smtpd[8325]: warning: ...
1
vote
1answer
13 views

Mailman not integrating with postfix properly

I installed postfix on my local machine and able to send mails to local users i.e. shivams in my case which is username of the account. Also i am able to send mail outside of my machine for ex. ...
2
votes
1answer
15 views

Postfix how to use policy service together with proxy filter

Using postfix 2.9 on debian I have configured before-queue proxy filter for scanning of spam and viruses smtpd_proxy_filter=127.0.0.1:27. I am using proxy filter and not content filter, so that I can ...
-4
votes
2answers
15 views

postfix not relying mail from remote hosts

I have the following postfix configuration: smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated myhostname = d*****.net alias_maps = hash:/etc/aliases alias_database = ...
1
vote
1answer
23 views

Postfix: Set custom SMTP Banner based on address used to access server

The Postfix parameter smtpd_banner sets the text of a server's SMTP greeting banner. The default setting is: smtpd_banner = $myhostname ESMTP $mail_name My mail server has several unique IP ...
1
vote
1answer
22 views

Outbound emails not being signed with DKIM using Postfix on Centos

I have been using phpmailer for my emails and i had dkim working correctly with this. I have a key mail._domainkey.domain.com. I have validated my past emails with http://www.mail-tester.com/ and i ...
0
votes
1answer
30 views

What directory permissions does Postfix require to copy mail into a users maildir folder?

I have postfix setup and running. Everything seems good other than the directory permission errors. In the past i accidentally ran chown -R apache / which as you can imagine broke a crazy amount of ...
-2
votes
0answers
24 views

Postfix User unknown in relay recipient table

I've setup a postfix system, with virtual users, mysql, dovecot, clamd, phpmyadmin and postgrey. I'd like to use virtual alias instead of virtual users, so that, nobody can user their mail account on ...
-1
votes
0answers
26 views

Postfix won't authenticate through SMTP but SASL does

I've been struggling to setup a Postfix on my server and I think I'm so close. So far I managed to get a success out of testsaslauthd like this: # testsaslauthd -s smtp -u mehran@example.com -p 123 ...
1
vote
0answers
44 views

Unable to send email via Postfix SMTP via Mac Mail App

I installed a SMTP server with Postfix as mail agent (on Ubuntu 12.04). Config is as follow: $ postconf -n alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases append_dot_mydomain = no ...
0
votes
0answers
34 views

Mail spam error while sending mails using Gmail id via Postfix hosted on Amazon EC2 server

This issue is related to using my own SMTP server to send email by any user mail id like some other mail APIs do e.g; Amazon SES, MailChimp. I am using Postfix as a mail server for my applications. I ...