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

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1answer
777 views

Postfix on CentOS 7 cannot authenticate against cyrus saslauthd

Postfix fails to authenticate against cyrus saslauthd. However, saslauthd itself is willing to authenticate. What am I missing? From syslog mail facility: Aug 5 14:47:26 centos7-msa-test ...
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votes
2answers
30 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: ...
0
votes
1answer
17 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
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0answers
21 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 ...
0
votes
2answers
41 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, ...
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votes
0answers
20 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 ...
0
votes
1answer
17 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
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1answer
3k views

Postfix rejecting to address

I'm trying to setup postfix on ubuntu. I only want to allow sending of email from local connections with no authentication. When I try to send emails I'm getting the following errors: 550 5.1.1 ...
2
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2answers
42 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 ...
-1
votes
1answer
30 views

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

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 ...
2
votes
1answer
60 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 ...
1
vote
1answer
33 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 ...
0
votes
2answers
27 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 ...
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
29 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 ...
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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 ...
4
votes
3answers
4k views

Dovecot user lookup fails when using username@domain format

I have Dovecot v2.0.11 installed on a FreeBSD server and the user lookups for incoming email addresses are failing, but lookups for system users is successful. Dovecot is setup to use system users, ...
0
votes
3answers
1k views

Migrating users and mailboxes from postfix / Maildir to Postfix with Mysql backend

So I've got 60 or so users on a hand rolled postfix installation on openbsd and I'd like to move their mailboxes to our new mail server running iRedMail (postfix, vmail/mysql back end) Does anyone ...
0
votes
1answer
3k views

saslauthd + PostFix producing password verification and authentication errors

So I'm trying to setup PostFix while using SASL (Cyrus variety preferred, I was using dovecot earlier but I'm switching from dovecot to courier so I want to use cyrus instead of dovecot) but I seem to ...
2
votes
1answer
78 views

Postfix SASL with Dovecot and Authenticated Smarthost

I have a bit of a problem; I have configured postfix to use dovecot for SMTP AUTH, therefore I had to specify dovecot authentication in the main.cf file. The problem is, I need to also authenticate to ...
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votes
1answer
90 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 ...
0
votes
1answer
30 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
48 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
0
votes
1answer
58 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 ...
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 ...
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 ...
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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.
3
votes
2answers
75 views

Postfix - forward rejected by unknown recepients emails to SPAM-learning mailbox

I have Postfix + BitDefender FRAMS running as hygiene gateway before few Exchanges. BD FRAMS can learn it's Baesian filter by download SPAM and HAM emails from dedicated mailboxes. Because we have ...
2
votes
1answer
266 views

Postfix header checks

How can I write regex for postfix header check to reject all the mails with X-Source-Dir having abc/def? Is this OK? /^X-Source-Dir:\s(.*abc\/def.*)/ REJECT due to spam: Thanks a lot ...
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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: ...
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
1answer
50 views

postfix disable blacklist checking for registered user

Many users has dynamic IP and sufficient number of these IP is blacklisted. How to disable check Postfix blacklist only for registered user? I want only block incoming mail from blacklisted IPS only. ...
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 ...
1
vote
2answers
65 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 ...
0
votes
0answers
25 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. ...
1
vote
2answers
920 views

Postfix enable SSL 465 failed

I have installed the Postfix and enabled SSL/TLS, just tested, I can sent email from port 25, 578, but cannot sent email from port 465, the log is: May 26 17:24:06 mail postfix/smtpd[28721]: ...
3
votes
2answers
69 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
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 ...
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 ...
1
vote
1answer
14 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
0answers
39 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 ...
-1
votes
1answer
199 views

`Sender address rejected: not owned by user` in Postfix

I am getting the following error when I try to send an email from a client on my home computer through my authenticated SMTP server, to receiver@gmail.com. Oct 17 09:21:40 debian postfix/smtpd[1643]: ...
1
vote
1answer
34 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 ...
0
votes
2answers
1k views

How to set per user mail quota for postfix using policyd v2?

I have configured cluebringer 2.0.7 mysql httpd and all services are running well . But now i want to set per user mail quota for outgoing mails and want to restrict for a fix number of mail. I have ...
0
votes
0answers
43 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 ...
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votes
0answers
17 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: ...
-1
votes
1answer
175 views

Postfix cannot send to external domains

I set up my Postfix with a sasl link to a Dovecot user / domain database. Postfix is giving the following error message when trying to send mail to external recipients (internal are fine): Server ...
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 ...