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

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1answer
24 views

Email forwarding?

I am not sure if this is possible, but please bare with me. I had a quick look around this morning, but as I wasn't sure what this was called or how to describe it thought it was best asking. We ...
0
votes
1answer
159 views

SMTP server, remove port 25 for relay communication

I have setup a SMTP server in my internal network, but I want to remove the port 25 completely since my service provider limits access to port 25. However, even using port 587 in my server to ...
0
votes
2answers
59 views

Mail don't reach server

I have VPS and serve several domains. DNS/MX config should be ok, as for *.com domains mails are both sent and received. Problem is with my country domain - *.hr (Croatia) - mails are sent, but ...
0
votes
0answers
42 views

how to enable dovecot virtual mysql virtual users authentication together with system users authentication

I use postfix,dovecot and mysql installed my mail server on centos. It works fine for mysql virtual users but the system users can not be found for authentication. How can i let it if it can’t find ...
1
vote
0answers
107 views

Postfix + Saslauthd + Kerberos 5 + CentOS 7 not working

I've almost got saslauthd checking against Kerberos but seeing some last issues on CentOS 7. When postfix talks to saslauthd, it sends a lowercased domain and it's not corrected. I tried to fix things ...
0
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1answer
84 views

Postfix as email forwarder to gmail, SPF problems

I'm trying to configure postfix as forwader to gmail. I've successfully onfigured the virtual aliases for the domains I'm hosting and that I want to redirect, but the Gmail SPF verification is failing ...
0
votes
1answer
36 views

Automatically defer certain messages in Postfix

Recently we've had a spate of "spear-phishing" attacks that many of our users have fallen for, and as a result our automated scripts are running at full steam locking accounts that have been ...
2
votes
1answer
80 views

Postfix/Dove copy incoming outgoing emails

I have to copy a mail account's incoming and sent mails to another mail account on the same server as well. How can I do this? The server is a debian wheezy running dovecot, roundcube and postfix. ...
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votes
1answer
65 views

Secure postfix smtp from spammer

I run on Centos 5 with Parallels Plesk 12 and look for to secure my smtp server. When I watch at log, I see some strange line like that, which I supposed it's hack connexion. Has someone any idea on ...
-3
votes
1answer
110 views

Mail spam by root and smmsp [closed]

Whenever I go to the mail queue log in the ISPConfig monitor section, I see approx. 300 hundred requests like the following: 482BDFEC0187 712 Thu Oct 9 09:39:01 smmsp@server.example.com (connect to ...
0
votes
1answer
39 views

Postfix: Handle different sender

I have currently the following Setup: Incoming E-Mails: Customer A -> Mailserver of Customer A All other Customers -> Default Relay For Outgoing E-Mails, I set up the sender_dependent_relayhost ...
-1
votes
2answers
38 views

linux MTA email forwarding with DB Lookup

I need to setup a service that will receive an email such a $uniqueID@domain.com lookup that uniqueID in a MySQL database for an email address then forward the incoming email to the email address ...
0
votes
1answer
156 views

Postfix - private/rewrite

Postfix is giving me this error on startup: Oct 8 16:59:48 cheese-ubuntu postfix/master[23917]: daemon started -- version 2.9.6, configuration /etc/postfix Oct 8 17:00:57 cheese-ubuntu ...
1
vote
1answer
99 views

Spamassassin DKIM DNS issue

Here is the setup where I encounter my issues : My computer has the IP 10.6.2.5. There is a DNS server ns.isp6.lab with the IP 10.6.2.4 (I can reach it). My computer has Postfix + Dovecot + ...
1
vote
2answers
144 views

Rejecting non SSL/TLS connections with postfix

I'm aware of the configuration setting smtpd_tls_security_level where encrypt requires incoming smtpd connections to be done over SSL/TLS, and may is merely a preference for secure connections. What ...
0
votes
3answers
65 views

Proper PTR record

I have a dedicated server with Plesk Panel 11.5 to handle the clients' sites and the next specs: IP 1: mydomain.tld IP 2: myclient1.tld, myclient2.tld, myclientX.tld The hostname is ...
0
votes
2answers
63 views

Dovecot create mbox type mailboxes even it shouldn't

I'm almost in finished task, but devecot always create mbox type mailbox for users even I've configured to use maildir syntax. I'm using dovecot, postfix, postfixadmin and MySQL in my server. ...
0
votes
3answers
90 views

SPF settings for subdomains using common mail server

I am having trouble getting subdomains to pass SPF checks when sending mail through a common mail server (AKA relay host). Here's the current setup: MX 10 mail.example.com. example.com. TXT ...
2
votes
0answers
43 views

Spamassassin not respecting my blacklist

I've tried putting my blacklist_from and whitelist_from lines in ~/.spamassassin/user_prefs and in /etc/spamassassin/local.cf, but they appear to be ignored. This is from postfix's master.cf: smtp ...
0
votes
1answer
552 views

postfix RCPT TO Temporary lookup failure 451 && mail transport unavailable

i configure Postfix and dovecot in fedora 20 my problem is when set RCPT TO return me 451 4.3.0 <test@example.com>: Temporary lookup failure my postfix Configuration main.cf # postfix ...
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votes
1answer
177 views

setting correct PTR record for domain and postfix email server [closed]

I have a problem where I recently figured out, that describes this output! What steps to do to set the DNS PTR record, is the IP in reverse in the name needed? The zone of my domain is: ...
1
vote
1answer
132 views

Postfix/Dovecot configuration with virtual users

I followed this tutorial for configuring Postfix + Dovecot with virtual users (in a mysql database) : ...
0
votes
1answer
189 views

Postfix - Mail system is down

My Postfix mail log keeps giving me this error; Oct 4 10:32:50 postfix/master[9760]: daemon started -- version 2.9.6, configuration /etc/postfix Oct 4 10:32:54 postfix/postqueue[9885]: warning: ...
0
votes
1answer
56 views

postfix/dovecot/mysql not sending/getting emails [duplicate]

I understand that I posted this before, however I left out some very important details which apparently made a lot of people less likely to answer, here's a more detailed version. My ...
0
votes
1answer
40 views

Postfix not receiving emails on fedora 20

I am new to fedora. I have fedora 20 set up with postfix. It can send email, and receive mail sent from localhost. However, if I send it from within the local network, then the packets come in and are ...
0
votes
1answer
93 views

Postfix on fedora 20 not receiving mail

I am running fedora 20 with postfix. It can send mail fine, but does not log anything and cannot receive emails. The packets are reaching the computer fine as I can see them come in when I monitor ...
1
vote
2answers
174 views

Postfix config under ubuntu 14.04

My dedicated server is running ubuntu 14.04. It's also configured as a dns server (bind) and my domain toto.be is pointing on it. I also installed postfix, added mx record, add iptables rules to open ...
0
votes
2answers
44 views

postfix - How to create truly user based rules for limiting?

I have a mail server (postfix 2.9.6) up and running with 15-20 users, only for internal usage with one single domain, let's call it xyz.mail.lan Users are: user1@xyz.mail.lan ...
0
votes
1answer
504 views

Zimbra doesn't send mail via smtp relay anmore

our Zimbra-Server isn't working for outgoing external mail since yesterday. Friday I installed some updates (for shell shock and Kernel updates), restarted and it worked fine. But since yesterday ...
0
votes
1answer
53 views

How to modify admin_maps_by_ccat amavisd settings for Zimbra OSE 8.5?

I'm trying to apply this answer to my zimbra installation as I'm getting a postmaster email every time I send an encrypted email. I tried adding $admin_maps_by_ccat{+CC_UNCHECKED} = undef; to ...
0
votes
1answer
101 views

Postfix relay for gmail sending as root

I've configured postfix to relay gmail (google apps) but the emails are sending as root@mydomain instead of admin@mydomain as (I believe) I've configured. I think the config is ok because I'm not ...
0
votes
1answer
56 views

DNS issue mail server

I tried to find an answer to this one around with no luck so far. I am not a sysadmin, but I work with mailings and one of our server presents some issues. I do not have personal access to the server, ...
0
votes
1answer
96 views

whitelisting some domains & some users on specific domains as destinations for Zentyal/Postfix [duplicate]

I have been using sendmail as MTA & SquirrelMail for webmail. I used to have following setup to restrict recepient in SquirrelMail. SquirrelMail had a plugin called Recepientrestrictions which can ...
0
votes
1answer
26 views

Default Relayhost and custom relayhost for domains [closed]

I have a customer which needs a custom relayhost for sending emails. So I want to choose this relayhost only for this domain. customer.example.com -> relayhost A (all other domains) -> relayhost B ...
1
vote
1answer
210 views

Postfix cannot authenticate against SASL

My system is Debian 7 aka Wheezy with postfix, courier, and mysql installed. Courier works well and if I issue testsaslauthd -u user@domain -p password -f /var/spool/postfix/var/run/saslauthd/mux -s ...
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votes
1answer
37 views

Postfix conditionally forward email [closed]

How do you set up automatic email forwarding based on conditions like: forward if from emailaccount@domain.tld forward if from domain is domain.tld forward if subject contains word 'Urgent' and ...
0
votes
1answer
61 views

Postfix SMTP authentication [duplicate]

I used this guide to create a mailserver for a small business: https://workaround.org/ispmail/wheezy. IMAP is working perfectly but i ran into an issue with SMTP and Authenticated SMTP. When i use an ...
2
votes
2answers
666 views

Send mail from Docker container with host's Postfix

I am running an Ubuntu 14.04 (Linux) server. I have installed and configured Postfix and OpenDKIM very nicely on the server; I can send emails to myself with commands such as echo hi | sendmail root, ...
0
votes
1answer
206 views

Postfix wont send mail to external email addresses listed in virtual_alias_domains

We have our main server at mail.mainserver.com with the catchall address catch@mail.mainserver.com We also have two other domains: domain1.com and domain2.com which are hosted at gmail. Gmail is ...
0
votes
1answer
347 views

SASL authentication failure: Password verification failed (postfix + cyrus + saslauthd)

We're having difficulties authenticating over smtp, running postfix + cyrus on centos 7. When I try to telnet to port 25 (or 587) locally and auth plain, I get the following errors in the mail log: ...
0
votes
1answer
76 views

postfix cannot communicate with target server via TLS/SSL

I am able to connect my postfix server with TLS. All things are set up. But when i send a message with this secure connection, target server (for example gmail) receive my message without TLS/SSL ...
3
votes
1answer
51 views

Postfix instances sporadically processing other instances incoming emails

I have a Postfix configuration problem that had me head scratching for days and I'm reaching out to you to help me figure out what the issue is, please bare with me while I explain my setup. I have a ...
1
vote
2answers
65 views

Postfix stopped sending to the internet

I am quite new in server managing, and I have a vps with Centos 6.5 / Plesk 11.5. My problem is that after having two mail accounts hacked, and used to send spam mail, I now can't send to most parts ...
1
vote
1answer
77 views

iptables + postfix cant send email

Recently my host provider sent me a letter about some sort of attack from my server. I'm not into security so i found some tutorial and closed all unused ports with iptables. Here is my iptables ...
-1
votes
1answer
16 views

some services switched off automatically

with my company we have a VPS. We have some issues with it. this morning the pure-ftpd was stopped. I had to start also postfix and the cron jobs were off for 3 hours. My config : Debian GNU/Linux 7 ...
0
votes
1answer
308 views

Postfix SMTP Server fails to send messages to anyone outside the domain

Here is the result of a recent test on my SMTP server, I just want this server to send emails which used to work perfectly upto about a week ago Resolving hostname... Connecting... SMTP -> FROM ...
0
votes
1answer
137 views

sieve redirect to foreign email gets “Relay access denied”

I have a postfix mail server with sql authentication and I want to implement sieve on it. Sieve is working relative good, rules who contain 'fileinto' are executed perfectly. I configured a rule in ...
-1
votes
1answer
146 views

postfix cannot access dovecot config file

I do not receive email because of the below, as mentioned in my mail.log: Sep 21 07:58:32 WWW postfix/pipe[5118]: 8F5FD605C8: to=<myname@mydomain.com>, relay=dovecot, delay=50089, ...
0
votes
1answer
177 views

Postfix: Pipe to script bounces sent to specific virtual user

I'm building a small ticket system where basically some mail accounts of my email server are piped into a PHP script that will take care of the emails. The server is running, I can send email over ...
1
vote
1answer
150 views

Blocking messages with an empty message-id in postfix

I've been receiving some spam where the message-id is empty, for example: Sep 18 12:07:16 postfix/cleanup[21530]: message-id=<> I don't use SpamAssassin. Is there a way using postfix to refuse ...