Free and open source mail transfer agent (MTA) that routes and delivers email

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34 views

Amavis sending Paypal payment emails to postmaster. Are they classified as spam/virus?

Some days ago i was reading some docs about amavis and decided to fine tune its configuration. As i'm new to amavis i probably setted some statements in the wrong way so last days i've been recieving ...
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1answer
33 views

Is open relay to local users the right way to work on port 25?

today i was checking my server Postfix restrictions when i realized anyone who meets a very basic requirements like not being in a black list, also anyone who communicates to the server properly, etc. ...
0
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1answer
26 views

Postfix not mapping UNIX users with @ character

What I want to achieve: On my production server, I'm planning to have multiple users and multiple domains and my best option is to create full email-address-format unix user - when John Doe requests ...
1
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0answers
80 views

Login to SquirrelMail as a virtual user

I am on CentOS 6 with Postfix, Dovecot, and PostfixAdmin. I have configured an external domain with the user me@domain.com as a virtual user. It's receiving mail without a problem at ...
1
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0answers
333 views

Postfix: Reject forged sender/from address

currently, i find myself in the situation where once Postfix 2.11 has been configured to properly reject outbound forged emails addresses when sender login mismatches and also when sender address does ...
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1answer
48 views

Alert Postfix sender when outbound email is not delivered due to amavisd-new checks

I'm running Postfix 2.11 together with amavisd-new which works fine with spamassassin and clamav to prevent inbound/outbound spam and virus traffic. Right now i'm looking for a way to alert users ...
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2answers
36 views

Does the spam keyword appear in mail log means that the email is marked as spam?

When looking at my mail log I have noticed the following: mail/mail.log.3:297:Mar 30 18:31:21 www postfix/smtp[21129]: 7A6C51014035D: to=<XXXXXXX@aserve.com.tw>, ...
0
votes
1answer
35 views

Postfix MySQL percentage error in query

I have a somewhat complex SQL query that I'm using to get alias forwarding e-mail in Postfix. The problem is that Postfix uses %s as it's insert of alias mark in the SQL query. I think this causes the ...
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votes
1answer
266 views

Postfix: “Connection timed out” on all outbound email

I've been attempting to setup mailing lists with GNU Mailman but it's been a complete disaster with tons of road blocks. Postfix is able to receive email but not send it back out at all, I've peeked ...
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1answer
168 views

Disable Cipher SSL3_RSA_WITH_SEED_SHA in Postfix

I want to disable cipher SSL3_RSA_WITH_SEED_SHA in Postfix. I have got in main.cf smtpd_tls_ciphers = high smtpd_tls_protocols = TLSv1,!SSLv2,!SSLv3 smtpd_tls_exclude_ciphers = aNULL, DES, 3DES, ...
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votes
3answers
54 views

Procmail or/and dovecot? [closed]

At my class project I'm asked to install and configure a mail service, to do that I have to : Install and configure postfix Install and configure Procmail Configure postfix authentification with ...
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2answers
259 views

Mailserver and MX records in Cloudflare

I built my own mail server using postfix/dovecot in CentOS 6, this is my postconf -n results: alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases command_directory = /usr/sbin ...
1
vote
2answers
98 views

If I use postfix for mail relay, so is myhostname / mydestination important?

I use postfix to relay mail to 3rd party SMTP and never sent out email directly, and of course I never receive email. So If I set myhostname / mydestination to sth like fake.mydomain.com, which ...
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0answers
57 views

Postfix mailbox_command + netcat + nodejs

I use Node.js script to process incoming emails and pipe them from Postfix via netcat in mailbox_command (namely: nc 127.0.0.1 3002). Node is listening on port 3002 and calls socket.destroy() once ...
0
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1answer
91 views

Postfix wildcard alias for DOMAINS

Is there a way to use an wildcard for the domainname, like webmaster@* Wildcards for addresses on a domain are working with "@domain", but "hostmaster@" does not work. current setup with *@domain ...
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vote
2answers
150 views

501 HELO no reverse dns name

I have a dedicated server with a public ip running postfix with multiple domains. The emails are coming in all right but when I try to send mails from this machine they often get bounced back by ...
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0answers
62 views

Postfix configuration with DKIM to send mail from multiple domains

My current setup is a Postfix installation configured with DKIM on a server with hostname prod01.example.com The server is used to send out mail on the form webshop@example.com, ...
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0answers
69 views

Postfix with Dovecot on Ubuntu - create group for local users only

Could someone provide me with info how to setup Postfix mail server to have one special group of users whom will only have a permission to send or receive mails inside domain. They can not send mail ...
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0answers
59 views

postfix master dead but subsys locked but working

postfix master dead but subsys locked I tried removing the files on /var/lock/subsys/ and restarted postfix, no error on logs and mail is working but when I check the postfix status it still says ...
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0answers
47 views

Where do I add DKIM details to amavisd.conf on Ubuntu?

I'm trying to add a DKIM key to an additional domain on my Ubuntu mail server, I am trying to add the following block of code to the amavisd.conf file $enable_dkim_verification = 1; ...
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votes
2answers
117 views

Postfix reject client from domains without MX records

Machine mail.domain.com send email for domain.com through Postfix 2.11 but today reviewing mail.log file i noticed some Wordpress on machines wordpress.domain.com and blog.domain.com as sending email ...
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1answer
219 views

StartSSL.com SSL Class2 Certificate and Postfix

currently my Postfix 2.11 instance runs TLS on a GoDaddy SSL Certificate but as i would like to be able to access my server from smtp.example.com as well as imap.example.com, example.com or ...
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1answer
68 views

increase partition size on CentOS 6 or move location of postfix

When my host set up my server they partitioned the drives in a strange way. I have the following two file systems. /dev/mapper/vg_norecordset-lv_root /dev/mapper/vg_norecordset-lv_home ...
2
votes
1answer
197 views

postfix transport relay access denied

When message arrives from other mail server (yahoo/gmail) on my postfix server it gets denied and not being transported using the transport on my configuration. Been checking whole day can't find ...
0
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1answer
49 views

forward a forwarded mail with postfix, based on rules

How can I get postfix to forward an incoming email to one or more different local alias(es), if the address I want the rule to be based on, is not the recipient? The address I want to act on is from a ...
1
vote
1answer
89 views

SMTPD restrictions

i'm looking for a bit of advice on Postfix restrictions configuration. I'm looking for a balanced configuration which properly rejects spam and unauthorized access retries. Lately, i've been reading ...
1
vote
1answer
72 views

Postfix does not reject wrong client and HELO name

I have a postfix server configured with reject_unknown_client_hostname and reject_unknown_helo_hostname. Regardless the server accepts non sasl_authenticated connections from clients and HELO names ...
0
votes
1answer
50 views

Postfix - disabling local delivery correctly

I have a postfix server with a config for no local delivery. Every email sent through from websites on this server are beeing sent out, no domain on this server accepts emails localy (every domain has ...
2
votes
2answers
179 views

SELinux preventing /etc/aliases email pipe to script from working

When somebody sends an email to my server, e.g. somestringthatisnotnecessarilyauser@myserver.com I want it to pipe to a PHP script. So in my /etc/aliases file I have: ...
0
votes
1answer
91 views

Postfix + Python MIlter

I want to write own miter, but I have problem. I have installed postfix, libmilter and python module Milter. I try to run sample.py milter which I found in pymilter-0.9.7.tar.gz (from ...
-1
votes
2answers
185 views

Postfix is Sending Spam [duplicate]

I have an Ubuntu 12.04 server, hosted on AWS, that powers a dozen WordPress installations using Nginx and php5-fpm. The problem just began one day. My server was down. Panic! Whenever I turned it on ...
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2answers
68 views

Postfix delivers to unix user rather than virtual

I have setup postfix to use virtual users for inbound emails, with the configuration read from mysql. However, when I try to deliver a mail locally, using something like sendmail root@localhost < ...
1
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1answer
46 views

Postfix regexp map for mailboxes

I need to forward all email that comes to mailbox by some mask to one specific mailbox. For example if recipient mail is 79001234567 it should be forwarded. line from /etc/postfix/main.cf ...
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0answers
20 views

Let Postfix show the appropiate SSL Certificate for a variety of host names

i bought an SSL Certificate for domain host.domain.com so my GNU/Linux mail server can deal with secure connections appropriately. That's ok while clients connect to host.domain.com but when they ...
-1
votes
1answer
103 views

Postfix/Dovecot cannot receive email from external sources

HELP! Haha. I recently was an idiot and foobared my server. I had a mail server running on it. On my new server, i am trying to set it back up and I cannot get it to work. I have almost the same exact ...
0
votes
1answer
94 views

change ehlo name of Amavis

Server: Ubuntu 12.04 64 bit Setup Postfix + Dovecot + Amavis with Mysql for Virtual domains. I have configured the postfix mailserver successfully. However when I test the Email with mail-tester.com, ...
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0answers
201 views

Postfix mysql Temporary lookup failure

I'm trying to configure a postfix/courier/mysql/SquirrelMail setup, using this guide, but i get the following error when trying to send an email: 451 4.3.0 <info@mydomain.com>: Temporary lookup ...
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0answers
55 views

SASLAUTH: Temporary block on more than 5 authentication followed failures

I'm running a Postfix MTA together to SASL when it comes to authentication. Yesterday saslauthd collapsed and none of the email users could login to the mail server. What i think is probably ...
0
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2answers
160 views

How to stop or prevent Postfix / smtpd / Sasl brute forcing

There are numerous attempts to connect to my mail server in order to send mail either unauthenticated or to guess username and password to, I suppose, accomplish the same. Should I fight against ...
0
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1answer
150 views

Postfix Spamassassin deferred queue massive error

I have been witnessing some massive problems with my Postfix email server, equipped with Dovecot, and spamassassin. The log files show errors like below, and there are thousands of such lines in the ...
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0answers
107 views

Cyrus SASL (saslauthd) stops working after several days without problems

I configured postfix with authentication enabled for outgoing mails with Cyrus SASL and MySQL on Ubuntu 12.04. Apparently everything works fine, but after several days, authentication starts ...
0
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1answer
270 views

Postfix alias [user unknown] issue

So I need to create an alias on my postfix server that will redirect all mail to multiple email addresses. I have postfix + postfixadmin with dovecot up and configured and everything seem to be ...
1
vote
1answer
368 views

postfix limit sending rate

hello i have this box centos 5.9 postfix 2.3.3 how i can configure postfix to send 1 message every second no matter what, i try this in main.cf with no success: default_destination_rate_delay = ...
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vote
1answer
64 views

what user is sending emails from mailq

I have a debian box with postfix on it. I checked the mailq and I do not understand how to read the mailq. I need to know witch user is used to send this emails. here is a example 0F87797868C ...
1
vote
1answer
46 views

Postfix - send to recipient and php script at the same time [closed]

I fight with a task, I need to send email via my postfix server and do some extra thing with information about recipient and sender. I tried do this by sending email to php script ...
0
votes
1answer
32 views

How to DNS emails to vhosted domain to separate server than website

I apologize if this is a duplicate, but I'm not sure of the correct phrases to search to ensure this hasn't been solved yet. I have 2 servers, with PTR records of domain.com and mail.domain.com. The ...
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0answers
26 views

Spam - openrelays using our email addresses

Folks, I'm getting into trouble with spam filters on the internet. Our own email addresses are being used by spammers and replies are being sent back to us with notification about addition to ...
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0answers
102 views

Postfix transport relay based on result of MX lookup

You can tell postfix to relay all mails for *@gmail.com via your account on smtp.google.com using transport maps: # /etc/postfix/transport gmail.com smtp:[smtp.gmail.com]:587 . # ...
0
votes
3answers
57 views

Postfix aliases

I have a question. Is it possible to configure postfix aliases to retrieve them from an external script? alias_maps = /path/to/pythons_script.py or alias_maps = /path/to/script.sh EDIT (based on ...
0
votes
1answer
65 views

Bounced mail reaches postfix but being removed by the queue manager

I have setup postfix and dovecot. Postfix is set to accept connections from my webserver to send out system generated mail. These are being sent out successfully. Sent out emails to some non-existent ...