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

learn more… | top users | synonyms

2
votes
2answers
20 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
0answers
14 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 ...
0
votes
1answer
18 views

Best Practice for Mailbox Backup (IMAP)? With Webinterface?

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 ...
-1
votes
0answers
15 views

Failed sent email to my domain. Delivery Status Notification (Failure)

I have a server with web server and the domain attached to this ip. Like www.site.com. When somebody want to send a email to root@site.com (or any other) i receive error - Delivery Status Notification ...
-1
votes
1answer
12 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
31 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 ...
1
vote
1answer
27 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 ...
-1
votes
0answers
18 views

connection refused while sending Email to outside domain in postfix smtp [on hold]

I am new to this postfix SMTP configuration, I can able to send the messages with in the server but I am getting the following error while sending the Email to outside server using postfix smtp Nov ...
0
votes
2answers
24 views

Magento Form can't send outgoing email via Postfix

When sending mail to this mailbox either from the Postfix admin panel or a third party service, mails are recieved. But when doing in to the "Conctact Us" page on the Magento eCommerce site, the mails ...
0
votes
2answers
25 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 ...
-1
votes
0answers
13 views

How to setup mailx to queue locally while forwarding to a relay

I have a mail-script running on about 40-50 servers, mailing me stats, logs, etc. about the machines. This script uses mailx to sendmail using the .rc file located in /etc/mail.rc. In this mail.rc I ...
1
vote
1answer
53 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
1answer
32 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, ...
0
votes
1answer
34 views

Postfix not working on MacOS Yosemite [on hold]

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
-1
votes
1answer
84 views

Dig shows external configuration? [on hold]

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
40 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 ...
-2
votes
0answers
21 views

I installed spamassassn at my ubuntu postfix server but spam emails not going to spam folder [closed]

Well how i said above, i don't know the reason all spam emails come with * SPAM * in subject but stay in inbox. Is there a way to make they go to spam folder? Thanks.
-1
votes
1answer
43 views

Dedicated server for running a Mail Server [on hold]

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
28 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
36 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 ...
0
votes
0answers
24 views

Dovecot Relay Access Denied; The SMTP server does not recognize any of the authentication methods supported by Entourage

I have a Dovecot/Postfix installation running, and have set up some email accounts using Vimbadmin. I have successfully set up several clients successfully using SSL to both send and recieve. ...
3
votes
1answer
54 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
13 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 ...
-1
votes
0answers
38 views

Postfix 25 no route to host [on hold]

I can't configure my postfix. My ISP didn't block 25 port, but in /var/log/maillog I receive this output: Nov 18 21:58:47 hostname postfix/smtp[21530]: connect to ...
-1
votes
1answer
30 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
67 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 ...
-2
votes
0answers
15 views

Dkim and domainkeys always come as neutral [on hold]

Well i tried this tool isnotspam.com and it say: DomainKeys Check : neutral DKIM Check : neutral and in mail log has: postfix/smtpd[5236]: warning: connect to Milter service inet:localhost:10027: ...
0
votes
0answers
42 views

Strange characters from mail server [on hold]

I have a server with PHP and Postfix isntalled. When I try to send an email with mail() PHP function like test! @ èòà I receive test! @ èòà I think it's a charset issue, but I don't know ...
1
vote
1answer
46 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
64 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
33 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
29 views

Postfix: dynamically rewrite server name depended on senders domain

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 ...
-1
votes
0answers
21 views

debian postfix address rewriting

So i've got a mailserver running postfix on the domain mail.example.com. I also got a client running on the domain client.example.com. And i want all mail that i send through this server to be ...
0
votes
1answer
36 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
0answers
39 views

Opendkim + Postfix + Plesk 11.5 Centos6

Hello and thank you in advance. I have a problem with the configuration of Postfix and Opendkim. When the OpenDKIM code is uncommented in the main.cf (last lines in the file) the mails are signed ...
0
votes
2answers
40 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 ...
3
votes
2answers
62 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
0answers
26 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
27 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
94 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
votes
0answers
18 views

POSTFIX How can I block spam with spoofed header that appear to be sent from the recipient's mail address?

I am managing a mail server with some domains on it, I am running postfix and courier on Debian. I am blocking spam by adding rules to the postfix header_checks, but, some domains are receiving spam ...
1
vote
1answer
36 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
55 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
votes
1answer
28 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
46 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
20 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
votes
0answers
45 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
54 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
41 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, ...
0
votes
1answer
41 views

Can send, but not receive email

I am able to send but not receive email on my server - this is similar to an issue I had before, but I've gotten further along and my emails send without issue. I believe the email receiving problem ...