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

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1answer
65 views

Postfix MySQL Dovecot Roundcube configuration

I am in the process of setting up a mail server and I was hoping to get some help. It starts with Roundcube webmail, when I tried to login with an existing correct user name and password it gives me ...
1
vote
2answers
63 views

How do I configure Postfix to accept SMTP for local users with “@” (at sign) in logins?

I have an Ubuntu 14.04 server at mydomain.com with a bunch of users with @domain in login, like us.er@mydomain.com. Each of them has an "pseudo" account us.er-mydomain.com with the same uid, passwd ...
0
votes
1answer
44 views

Dovecot configuration

I was setting up a mail server on Amazon EC2 using postfix and dovcot and I seem to be stack on starting up dovecot service. Here is the message i got when I run Service dovecot status dovecot ...
0
votes
1answer
47 views

Postfix reply to emails addressed to external email while keeping the correct from address

I have a mail server all set up and running on ubuntu 14.04 with Postfix / Dovecot for the domain "postfixserver.com". A second domain "googleapps.com" is running on google apps. user@googleapps.com ...
0
votes
1answer
52 views

Prevent Email Going to Spam [duplicate]

I've set up my own server and I'm really struggling to stop any outgoing email go to spam. I've used allaboutspam and mail-tester.com to test it and they both come back with perfect results. No ...
0
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0answers
55 views

How to integrate spamassassin to work with squirrelmail?

I have recently configured, postfix/dovecot/squirrelmail and installed AMAVIS, CLAMAV, SPAMASSASSIN .Im trying to check spam system is working by sending a plain text email with the following string ...
-1
votes
0answers
22 views

Postfix on multiple ports

I have defined an alternative SMTP port with TLS support for sending letters from postfix. The default is (TCP 587). I have 5877 inet n - - - - smtpd in the ...
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0answers
22 views

How to get UIDNEXT in python procmail pipe script? [migrated]

I have this python script for inserting raw email to db. Do not ask me why I am inserting raw mail to database. import sys from DB import * import email full_msg = sys.stdin.readlines() j = ...
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votes
2answers
67 views

ports 993 and 995 not open even though opened in iptables

Hi I have a problem with imaps and pops access of email clients to mail server (postfix/dovecot) telnet from the servers shell (ubuntu 12.04, postfix, dovecot, spamassassin, amavis) to ports 587, 25, ...
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votes
1answer
31 views

Rewrite sender when relaying to provider server [duplicate]

I am trying to relay email thru my provider that has a mail server for my domain (xxxx.com). My postfix is configured as follows: relayhost = [smtp.xxxx.com]:25 the server requires authorization, ...
1
vote
1answer
100 views

Alternative to postfix with SNI certificates + Dovecot compatibility

As we're aware postfix doesn't support SNI (Server Name Indication), which means that if you'd define a certificate, it will be used for all domain names that you have on that server, which could be ...
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vote
2answers
59 views

Postfix master.cf file modified by unknown at startup on Plesk / CentOS system

I manage a VPS with a custom configuration in the Postfix master.cf file (link to my blog explaining the trick) that allows me to associate unique SSL certificates to each domain/IP for smtp and ...
0
votes
1answer
56 views

Postfix body_checks regexp expression does not work?

I have a a reject rule inside body_checks parameter written like this: /(\d{3,4},\d{2} EUR)/ REJECT Body Spam Rule 934 This regexp paramater should be ok, at least according to some testing pages ...
3
votes
2answers
73 views

Postfix won't accept submitted email for other users on virtual domain

My employer has given me an email address, me@myemployersdomain.com. My employer's outgoing mail server only allows connections from inside their network (rather like an ISP who insists you connect ...
0
votes
1answer
23 views

ASSP performs SPF check on mail it forwarded itself

So I set up ASSP and it seems to work because I'm getting mail. Yay. But it's performing some strange SPF checks. Some domains can't send me mail, and receive an error message back. In it is a link ...
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votes
1answer
53 views

Best Practice for Mailbox Backup (IMAP)? With Webinterface? [closed]

Situation: Debian Mailserver with ISPconfig3, Postfix and Dovecot, about 500 Users with different Domains. Server is a virtual client, so i backup it via XenBackup. Problem: If a user delete a single ...
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votes
2answers
77 views

postfix::header_checks custom multi-line text replace in the mail header

I very successfully dealt with single line headers in pcre:/etc/postfix/header_check. But when it comes to multi-lines, I'm a bit frustrated. Here is a part of header: X-MS-Has-Attach: ...
1
vote
1answer
55 views

Outgoing Spam through hacked Mail Accounts

Already searched some Hours about this Problem - but no good Solution in sight - so maybe someone here can help me on this. We offer Webhosting / Mail Services. Lately the amount of Hacked E-Mail ...
2
votes
1answer
45 views

Different postfix relayhost based on system user?

How do I configure Postfix to send email through a different relayhost based the system user? The current setup has relayhost= set so all mail goes through that smtp server but I would like Postfix ...
0
votes
2answers
44 views

How to have a limited set of users on Office365/Google Apps and balance on vanilla Postfix

As the mail heading suggests, we have about 100 mail users, we would like to move about 15 users on to one of the cloud based services Office 365 or Google Mail. Balance we would like them to continue ...
2
votes
1answer
95 views

Mailman and Apache Virtual Hosts problems

I am creating a set up of Mailman, Apache2.4 and Postfix. My problem is as follows. When I access the mailing list with the domain name, I get the correct result in my browser. Here the picture ...
0
votes
2answers
184 views

How do I configure PostFix to allow phpmailer to send out email through it?

I have setup postfix on CentOS and trying to configure phpmailer with smtp authentication. Phpmailer will only work if i put 0.0.0.0/0 under mynetworks in postfix main.conf mynetworks = 127.0.0.0/8, ...
1
vote
1answer
290 views

Postfix not working on MacOS Yosemite [closed]

Postfix would not bind to the ipv6 port. Gives an error of: *** postfix/master[39799]: fatal: bind fe80::1 port 25: Can't assign requested address
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votes
1answer
146 views

Dig shows external configuration? [closed]

I'm already trying for 2 days to deal with an answer for this problem. I have a virtual server somewhere and installed postfix/dovecot/mysql. It works somehow. I can login with Outlook with the ...
3
votes
1answer
54 views

Postfix unable to deliver to user's Maildir

Had a server that was using postfix/dovecot w/ CentOS 6.5/6.6, Every thing has been running well for the past few months, until the raid controller failed. So I installed a new server using CentOS ...
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votes
1answer
47 views

Dedicated server for running a Mail Server [closed]

I was wondering what kind of server(s) do I need if I want to run a mail server that handles approx 200+ email accounts with each averaging 50 emails per day? Mail server setup would be: Postfix: ...
0
votes
1answer
57 views

imapd-ssl: admin: No such file or directory

I am trying to set up my VPS so I can use Thunderbird IMAP to manage my mails. First, I installed postfix and followed this guide to create an SSL certificate. Then I installed sasl2-bin and ...
0
votes
1answer
37 views

is there a way to discard all mail sent to a user

I started to get some spam mails to a unique user, and that user does not exist in our system. so I want that all mail for that nonexistent user gets discard. is this possible? [update] my ...
3
votes
1answer
71 views

tell Postfix to close connection right after “Relay access denied”

I have seen on some good setup mail servers, they terminate connection right after error 454 4.7.1 <spammer@spamserver.com>: Relay access denied which is probably saving a lot of resources ...
1
vote
1answer
15 views

Howto masquerade Postfix on SMTP session?

for security reason (and for other reasons too) I want to hide "Postfix" from SMTP response now: [root@mail ~]# telnet 127.0.0.1 25 Trying 127.0.0.1... Connected to 127.0.0.1. Escape ...
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votes
1answer
31 views

Mail server constantly tries to send email [closed]

I have a mail server with Postfix and Dovecot installed and I've noticed it endlessly tries to send out malformed emails with misspelled address. For example if I type to: anton@outlok.com (misspelled ...
3
votes
2answers
119 views

Postfix rejects an outgoing email with multiple destinations due to one invalid address

I'm sending my emails using Postfix, and I've got a considerable list of emails to send newsletters to. So I prefer to pack my SMTP requests into one by setting one of emails as To and a bunch more as ...
1
vote
1answer
69 views

Postfix - restrict communication inside domain

I'm setting up a postfix cloud server and I'd like to restrict communication inside the domain. That is, users can only communicate with other users who own an address in the email domain - no ...
1
vote
2answers
106 views

Is my Postfix sending spam?

In my Rsys log I am getting weird email requests that are not initiated by my server: Nov 17 09:32:18 localhost postfix/qmgr[21748]: 8E52272C09: from=<>, size=33770, nrcpt=1 (queue active) Nov ...
1
vote
1answer
53 views

dspam crashes with “general protection” kernel error [closed]

I use DSpam with Postfix. Recently DSpam started to crash with the following error in syslog: Nov 16 14:10:55 home kernel: [ 133.042190] traps: dspam[1692] general protection ip:7f63a493f3b0 ...
1
vote
1answer
34 views

Postfix: dynamically rewrite server name depended on senders domain [duplicate]

Im setting up postfix SMTP relay, that will be placed right after Exchange server. Details: 1) postfix server name mail.server.com 2) we have several domains: a-domain.com, b-domain.com and etc.. I ...
0
votes
1answer
49 views

Getting unknown mail requests on my SMTP server

I set-up a private mail server on my VPS. I get a lot of mail request on the SMTP server while I did not send them by myself. I disabled the bounce mail to prevent spamming other mail addresses. How ...
0
votes
2answers
91 views

Postfix 5.7.1 Relay access denied

I know there's a lot of similar questions here but none has helped me. So I have a Debian 7.0 server with postfix and dovecot working on it with a self-signed certificate. I can send emails to other ...
4
votes
2answers
107 views

Confused about alias_maps and virtual_alias_maps

I have already re-read the docs on this as well as other posts here and this is still very unclear to me. I have been testing various things to understand the difference between alias_maps and ...
0
votes
1answer
38 views

General protection fault by __d_drop following SMTP attack

The SMTP port (Postfix) of my box running 3.16.5 is being hammered. The log repeats this over and over: Nov 14 09:16:25 [postfix/smtpd] lost connection after UNKNOWN from unknown[177.43.41.74] Nov 14 ...
2
votes
1answer
35 views

Postfix and smtpd_client_rate_limit to detect compromissed accounts

Some of our clients are administrators who need to send corporative messages to no more than 300 clients, specifying all of these clients together in the "To:" fields, instead of individual messages ...
3
votes
3answers
128 views

Postfix and compromised accounts

First of all, sorry for my English. I think it's very common to set the permit_mynetworks and permit_sasl_authenticated restrictions on first positions of the smtpd_recipient_restriction list, but, ...
1
vote
1answer
137 views

SSL_accept error when mail client connect to postfix

I've managed to set up postfix and dovecot with self-signed certificate on my server. I can send and receive email using telnet command there. Now I want to connect to my mail server from a ...
0
votes
1answer
105 views

Postfix not receiving external 550 5.1.1 bounce messages

I'm running Postfix 2.6.6 on CentOS 6 and, as the title of this post states, I'm having an issue with receiving bounced email messages from external sources. Here is an example: test 1: sent an email ...
0
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1answer
42 views

Postfix not using “non_smptd_milters”

Currently configuring a mail server using Postfix/Dovecot on Ubuntu 14.04 x86. At the moment I'm trying to setup DKIM using OpenDKIM. The guide I am following tells us to put the parameter ...
0
votes
1answer
48 views

Lot spam from unknown source

Here is the email header and info that I got from aol abuse. This type of emails are being generated from my server randomly at a very low rate and IP is blacklisted very freuqently. After 2 weeks of ...
0
votes
1answer
48 views

How can I suppress Postfix anvil statistics from system logs?

After every email sent through my mail server, postfix/anvil appends something like the following: Nov 9 15:09:11 keutenberg postfix/anvil[30006]: statistics: max connection rate 1/60s for ...
0
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0answers
57 views

Postfix server rejecting sender address

I installed a mailserver (postfix / dovecot) on my Debian Wheezy system and cannot send mails. Since I just want to administer a mail server and don't have a domain yet, I'm working with the external ...
2
votes
2answers
95 views

postfix rewriting sender with generic & header_check

I want to rewrite all sender addresses @example.com to newsender@example.org (to one static outgoing address) but I also want to have the original address added as the reply-to. I can do either ...
0
votes
1answer
69 views

How to make a domain receiving email behind cloudflare?

I have a web server hosting multiple domains (centos + postfix + dovcot), one of my domain its dns is hosted on cloudflare (ie. abcd.com), but when I use gmail to send email to a user@abcd.com, ...