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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-1
votes
0answers
8 views

No encrypted email from my Postifix Dovecot mailserver

i'm desperate because don't reach to set my postfix to send encrypted email. The answer is always the same (using checking software like www.checktls.com): Your email was sent, however it was NOT ...
8
votes
1answer
84 views

Best Practice: notify email sender that their reverse lookup is broken

This probably should be a wiki, not entirely sure. Before I begin, the external server that performs scanning is a custom amavis/postfix/fortigate pipeline; it is suggested that any changes work ...
1
vote
3answers
48 views

mails fom my mailserver go to spam folder of hotmail.com

I set up a mail server with dovecot/postfix on a debian server. I don't send commercial mail or newsletters. We are only 4 users and nobody send SPAM. We only send classical mails (no large pictures ...
1
vote
2answers
112 views
+50

Postfix(admin), Dovecot, MySQL: Aliases not working

I'm able to send mail to the mailboxes i've setup with postfixadmin. This is working correctly and i can send and deliver mail on them. But now i'm in need of Aliases to work properly as well. I've ...
0
votes
0answers
18 views

Postfix limit total sent per hour

I'm not after services that could provide me with fancy fine-grained control like policyd, I don't need per user/domain control, I only want to: limit maximim number of emails that could be sent ...
0
votes
1answer
15 views

How to restrict SMTP login to its own address in sasldb2?

I'm using sasldb2 (without saslauthd) for SMTP authentication with Postfix. To create a new user, I run saslpasswd2 -u example.com mail which creates a login mail@example.com. However, using these ...
0
votes
0answers
6 views

postfix body check file content

I come across a strange scenario. I'm using a file containing lines of keywords for postfix to scan so that it can reject spam messages. Now this line causes postfix to think an email containing ...
6
votes
2answers
3k views

postfix/dovecot says “postmaster_address setting not given” but it is

I'm trying to configure postfix and dovecot to work together with virtual domains stored in MySQL, but I keep running into this whenever mail is passed from postfix to dovecot. Apr 26 11:54:40 smtp ...
0
votes
0answers
6 views

Postfix GMAIL Relay – Issues with Mail

I’ve installed the latest release of Postfix onto a CentOS7 server and have configured it to relay any mail on test@mydomain.com to send to an account on Gmail. The problem I have is that whenever ...
0
votes
0answers
8 views

Postfix complaining about not having an quals sign after attribute

I'm running Postfix, Dovecot, SpamAssassin, ClamSMTP, and OpenDKIM on a Debian Jessie VPS. Everything works fine but my only problem is that Postfix is complaining that there isn't an equals sign ...
0
votes
0answers
21 views

postfix mails stuck in mailqueue

I ran into a problem, I'm trying to set up postfix mail server (I'm using webmin), everything seems to work fine, I successfully connected outlook to POP3/SMTP, but as soon as I send an email, it gets ...
0
votes
0answers
20 views

Smtpd_sender_login_maps isn't working for Postfix

So I'm trying to set my postfix up so that only certain users can relay their own emails. Instead of allowing them access to all the emails on the server. At the moment with the setup below any ...
0
votes
1answer
29 views

Outgoing spam from postfix using my domains

I get a lot of spam outgoing from my server which uses fake emails but real domains (that are hosted on my server Linux Debian Squeeze). These all have "msg" plus a random number as Email address. ...
4
votes
1answer
5k views

postfix rate limiting

I did add a new slow transport to my Postfix configuration but this doesn't looks to work. Messages pass correctly in the slow transport but they aren't rate-limited. Currently, I've been setting ...
1
vote
2answers
13 views

Postfix would not auto-create the Maildir for incoming mails

I am trying to setup a mail server, I went over tons of tutorials on how to do this with Postfix + dovecot + MySQL, but none was error-proof and I always got stuck at some point with an error, so I ...
0
votes
0answers
8 views

apache postfix trying to change user “from” address from apache to domain account

This is the same question as of apache sendmail: trying to change user "from" address from apache to domain account but its for postfix. User did not actually mentioned what he did with ...
0
votes
2answers
32 views

postfix block mail to a domain only for a specific destination domain

I have a mail server that hosts many virtual domains. The owner of one virtual domain that is on this server asked me to block mails coming from an external domain to his mailboxes. I have this ...
-1
votes
0answers
17 views

How to setup a simple email account to receive emails and fetch them via an ordinary email client? [closed]

I have a VPS with Debian Jessie on it running default unconfigured postfix on it. An application is running on this server and it's sending mails on specific events. It was sending them to an gmail ...
0
votes
1answer
26 views

Switching IMAP/POP3 login username from username to username@domain

I'm running a CentOS7 server with Postfix, Dovecot, Roundcube, etc. Right now everything is working. Users log in and check their mail by their username only. I would like to alter this so they ...
-1
votes
0answers
17 views

Script sending mails from our server [duplicate]

I apologize if this is asked many times. My OS is CentOS and postfix with Plesk 12.5 I found that one PHP script is sending mails from our server. Strange this is that its sending from our domain ...
0
votes
1answer
13 views

Postfix authentication issues after I configured TLS

I've setup my mail server with Postfix for SMTP and Dovecot for IMAP. Instead of virtual users I simply listened to the suggestion of someone from Server Fault and went with Linux users. I'm using ...
0
votes
2answers
562 views

email sent from my server shows up as spam [duplicate]

I know this question has been asked and answered a couple of times, but I can't find any reference to my particular problem. I've set up Postfix and Dovecot on my Debian 7 VPS and I can send mail, but ...
0
votes
0answers
30 views

Postfix spam in queue

Recently our company system administrator quit his job and it is unreachable. I was his coleague and helped him with the IT stuff. After he left we noticed our mail system stopped working. So I ...
0
votes
1answer
47 views

Setting up mail accounts without real Linux users

I've setup Postfix and Dovecot on my Ubuntu Server. My aim is to create 27 mail accounts that can receive and send mail to everywhere. I've got emails to not show up as spam in Gmail, Yahoo and ...
3
votes
3answers
247 views

Gmail flagging Dovecot email as insecure

I thought I successfully secured my Postfix/Dovecot email server. I have a signed certificate from LetsEncrypt, which is valid for my domain. Sending & receiving works fine, but since Gmail ...
0
votes
1answer
27 views

Postfix Mail Server & hosted Gmail relay setup

I am trying to setup our web server so that it can send emails from various web apps to reset password etc. Our mail is hosted by Gmail with a custom domain eg. mydomain.com. Right now emails going ...
0
votes
1answer
11 views

Configure dovecot using postfix to send email from any email to any email

I am trying to configure smtp server to allow my applications on the server to use this smtp to send email to/from any email address. I have used all the configurations from http://www.server-world....
0
votes
0answers
9 views

Disable bounce messages to original sender & forward it to another address via postfix

I want configure my mail server to prevent all bounce messages to be sent back to the original sender & forward those bounce messages to the postmaster instead. (Don't want to discard all these ...
0
votes
0answers
13 views

Nested MTA in postfix in Ubuntu 14.04

I have a machine M1 which is in environment A and another machine M2 in environment B. Machine M1 has access to our mail server. It can send mail to our email addresses by connecting to our mail ...
0
votes
1answer
3k views

Fetching mails into postfix/dovecot via pop3/imap

I managed to set up my first Debian mail server using postfix and dovecot. I use roundcube to access my IMAP accounts which are defined by virtual users in a MySQL data base. Everything works ...
8
votes
4answers
13k views

Postifx disable local delivery

is there any form to prevent local delivery on a postfix server? Ideally, I want to avoid local delivery to some domains, because this postfix server is a google apps backup one. Thanks in advance, ...
0
votes
1answer
16 views

Permission denied for dovecot to access mail directory

I have setup a mail server using Postfix & Dovecot on CentOS 7. When I try to fetch email using thnderbird or any other email clients, I get this error in my maillog file: Jun 19 01:38:23 ...
-2
votes
0answers
48 views

Configure postfix to change outgoing email address from account@localhostname to another email address [closed]

There are several accounts already created in postfix. They send out automatic emails to users like i.e. to notify them that their account was successfully created. Currently these automatic emails ...
0
votes
0answers
12 views

setting virtualmin SSL certificates for Dovecot and PostFix fo each domain

In Virtualmin, If I apply one of the domain's certificates to dovecot or PostFix via Server configuration > Mange SSL Certificates > Copy to Dovecot / PostFix, The certificate is copied to the ...
0
votes
1answer
29 views

Mail sent by Postfix / Dovecot setup going into spam folder

I am running a Debian 8 VPS for a couple of months now. I running several services, including a mailserver with Postfix and Dovecot. As far as I can tell, I have everything set up correctly. My IP is ...
0
votes
1answer
16 views

SMTP Error - Dovecot/Postfix

Both Dovecot and Postfix are working perfectly. Especially for machines Win 8+ and Mac OS 10.10+ as well as iOS 8+. But trying to connect from a 10.9 Mavericks Mac makes it weird... Here is my main....
0
votes
0answers
28 views

Make Postfix relay to a different host for sending email based on RECIPIENT domain

Is there a way to make postfix authenticate and relay on a different host for sending email TO a particular domain? The sender domain does not matter, I need postfix to relay to a different host if ...
2
votes
3answers
11k views

dovecot-lmtp does not exist

I followed this guide on linode to setup dovecot and postfix mail server on my Ubuntu 12.04.2 LTS . The setup requires socket /var/spool/postfix/private/dovecot-lmtp to act as virtual transport. ...
0
votes
1answer
53 views

Postfix - restrict authenticated senders to their own e-mail address in MAIL FROM

How do I prevent my (authenticated) users from sending email messages with either incorrect or outright falsified email FROM addresses? My mail service is postfix and I have already set sender and ...
0
votes
0answers
39 views

How run script after spamc, use args in script and redirect spamc output to sendmail?

I'm trying to perform custom actions after spamassassin. I have working line in postfix master.cf spamassassin unix - n n - - pipe user=spamd argv=/usr/bin/spamc -e /usr/sbin/sendmail -oi -f ${sender}...
-1
votes
1answer
20 views

forwarding emails via postfix, smart routine to actively check that it works

I have a domain registered at namecheap and run my website on a digitalocean droplet. I have successfully set up email forwarding on the server with postfix, such that emails sent to name@example.com ...
0
votes
0answers
6 views

Postfix custom Error configuration [duplicate]

I am trying to find a way in Postfix where I can modify the error message Recipient address rejected: User unknown in virtual mailbox table I am creating a custom solution where this is going to ...
0
votes
2answers
37 views

Find out exactly what (which php script) is trying to send spam from server

Last night my server was compromised (I guess - one of outdated PHP CMS's) and many spam messages were sent. I have restricted access to Postfix (via authorized_submit_users directive in main.cf) ...
4
votes
2answers
4k views

How can I get postfix to send mail to different relay hosts?

I'm running multiple websites on a single server. I'm using sendgrid to send my email. Right now, I have postfix relay all outgoing mail to a single sendgrid account, using smtp_sasl for ...
0
votes
1answer
46 views

Cannot send mail to postfix mail server

I've setup a postfix mail server, my domain points to my server as I'm already hosting the website. However I cannot send any mail to the mail server. I've added the email's such as casper@...
0
votes
2answers
44 views

Blacklisted client: why did Postfix not reject this email?

Answer The best answer was on the postfix-users mailing list and it is summarized here for the benefit of serverfault's users. I had forgotten soft_bounce = yes. Always switch it back to no after ...
0
votes
0answers
27 views

How to get spamassassin working with postfix as a milter

I'm trying to get spamassassin working on Ubuntu 16.04 with postfix. When receiving mail, I get messages similar to the following in my logs: Jun 11 14:29:47 myhost postfix/smtpd[2387]: connect ...
5
votes
1answer
4k views

postfix multiple IP SMTP banner

I've installed postfix 2.11.3 and we have multiple IP addresses on our server which we want to host two domains, isolated and running on their own IPs. domain1 unix - - n - - ...
0
votes
0answers
6 views

Postfix reject on Centos 5.11?

i like to config postfix to reject ALL incoming emails except one that is whitelisted what i was try: /etc/postfix/sender_access someone@somwhere.com OK foo@bar.org REJECT it is working , but i ...
0
votes
2answers
46 views

Postfix config, prevent server from blind relay

All, I'm having a bit of a weird issue. I have a legacy Postfix smtp server that just yesterday started acting as a relay for spam. From what I can tell, the issue is that whatever spam bot is doing ...