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

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952 views

ubuntu PostFix + Dovecot mail server

/log/mail.log Jun 23 10:38:05 mail postfix/smtpd[60639]: connect from mail.faisal.asia[127.0.0.1] Jun 23 10:38:05 mail postfix/smtpd[60639]: disconnect from mail.faisal.asia[127.0.0.1] Jun 23 ...
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1answer
41 views

Can I use the same domain to send outgoing only emails from another server?

The company currently uses gMail apps for incoming/outgoing emails. It has sending limits which I need to get around. Can I set up (say) postfix for outgoing only email on the local server? Can it ...
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1answer
44 views

How to make content_filter work for only my domain

I have a simple content_filter and attached it successfully to Postfix. However for any e-mail coming to Postfix it calls this filter. However I only want this filter to be called when e-mail is ...
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vote
1answer
96 views

Deliver email from local development server

I'm working on a website development and need to test some email stuff (send email to register users just me and I'm using my personal email address for this purpose). I'm not an expert so I only have ...
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3answers
359 views

Tool to analyze postfix maillog [closed]

I have a mailserver running on iRedMail. Recently we have some issues that people reporting they would receive phisihing emails from us, which haven't been sent by the users they are saying the are ...
3
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1answer
410 views

Fail2Ban: already banned?

I have Fail2Ban running on my Centos Server. (Config below) In my var/log/messages I noticed something really weird: Jun 19 12:09:32 localhost fail2ban.actions: INFO [postfix] 114.43.245.205 ...
3
votes
1answer
246 views

Outlook.com DNS so slow, postfix times out

I'm trying to send e-mails to for example: postmaster@grassvalley.com and postmaster@jorssen.net.bmw.be. In both cases these are Outlook mailboxes. Postfix replies with: (when ipv6 enabled): ...
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1answer
513 views

Postfix: Gmail marking my email as spam

I'm been trying to understand why Gmail is treating the email sent from one of my domain/server as SPAM. I found a lot of threads here about this issue, however I checked the usual suspects like ...
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3answers
233 views

How to limit amount of email sent by postfix to certain domains and control it by using mail header?

Goal I'm looking for a solution to limit rate of e-mails sent to specific e-mail operator (several Top-Level domains, all of them I know) on hourly basis. I also need some way to control the rate on ...
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vote
1answer
44 views

Error in amavisd.conf -missing curly or bracket

I'm currently trying to setup Spam and Virus Filtering on my CentOS 6.4 machine using SpamAssassin and ClamAV. I've installed all necessary packages (SA, ClamAV and Amavisd-new) and configurated them. ...
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0answers
96 views

Postfix, schedule batches of email to be sent

Is it possible to have postfix limit the amount of emails it sends at once and when there is larger than x email, send them out in timed batches (wait 5 minutes, send another 50, something like that)? ...
1
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1answer
89 views

Postfix smtps and submission confusion

I've setup postfix so that email clients use port 465 (smtps) for outbound mail. I'm not really understanding the difference between smtps (port 465) and submission (port 587) What's the 'best ...
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1answer
44 views

Setting Postfix's sender_dependent_relayhost without a registered domain

I've been trying to link up SES with my EC2 instance (that has no DNS record) and am trying to figure out how to jerry-rig my sender_dependent_relayhost. Since I do NOT have a DNS record that ...
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1answer
84 views

Postfix relayhost parameter for a null client

I'm trying to set up postfix as a null client, that is, I just want local linux users to be able to send mails outside using postfix's sendmail binary. No reception of emails, no relaying for other ...
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1answer
390 views

Postfix allow SASL-authenticated users to send from any IP address

I understand that I need SMTP on port 25 to receive email, but I do not want this to be a relay port. Instead I would port 587 to be used for registered (SASL-authenticated) users to relay email from ...
0
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1answer
205 views

Incoming hotmail connections timing out with TLS enabled

Okay, this has me completely baffled. I have tried many things to fix this but I'm at my wits end. At the start of June, the server which I maintain suddenly decided to stop accepting incoming TLS ...
0
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1answer
81 views

Sieve - Redirect incoming mail for all mailboxes within domain to one specific mailbox

Is it possible to set a global sieve filter to redirect mail to specific mailbox within receiving domain. I understand I can simply point out where I want mail to go in a filter like ...
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1answer
62 views

Add a per-domain filter in sieve

How can I set up a per-domain filter in sieve/dovecot? In documentation I can see per-user setting: sieve = ~/.dovecot.sieve, and right now I'm using global filter: sieve_before = ...
2
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1answer
57 views

What database permissions to grant for Postfix using MySQL?

I'm trying to set up a Postfix mail server using MySQL for the mapping tables. As it's bad practice to simply grant all permissions unless they're needed, I want to grant only the minimal permissions ...
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1answer
50 views

Postfix Regex Alias with Text Substitution

I'm migrating from an older email structure ([first letter of first name].[last name]@company.com) to [first letter of first name][last name]@company.com. To ensure that mail sent to older addresses ...
0
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1answer
121 views

Configuring SMTPS in Virtualmin

I'm attempting to configure SMTPS in Virtualmin and am running into a roadblock. I followed the instructions here without a problem but when I do the autoconfigure in Thunderbird it still says that ...
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0answers
384 views

Zimbra SMTP Reverse DNS Mismatch

I have a Zimbra email server. sending and receiving is fine, however When I use online tools to check that things are configured properly, I'm being told my reverse DNS SMTP Banner is wrong. ---- ...
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1answer
32 views

Sending mail via PHP gives fatal error in postfix

Any idea why sending mail via PHPs mail() function gives the following error in postfix: fatal: no login name found for user ID 6000. 6000 in this case is the user I have configured in the PHP-FPM ...
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1answer
283 views

Postfix After-Queue Content Filter, advanced filter not working

I followed the instructions in the postfix website on how to setup a content filter, I got the simple example up and running fairly quick, but after long hours of struggle I couldnt get the advanced ...
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1answer
324 views

Have Postfix bounce certain addresses with a custom message and forward all other messages to another server

We have a list of users who no longer have mailboxes in our Exchange environment. We want to have a very specific reply to these users with a possible custom variable. I thought Postfix would ...
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1answer
86 views

Postfix how to triggering my script when outgoing email status is sent?

I want to run a program when postfix has successfully sent out a mail (local or remote). I would like to pass the headers to program and if possible also the destination ip or address (exclude spam ...
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2answers
106 views

Postfix mail server acting as an open relay

I'm trying to get postfix to work with mail clients (thunderbird / outlook), but the only way I can achieve it at the moment is by turning the mail server into an open relay, which is very bad, ...
0
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1answer
257 views

What is stopping postfix from delivering mail to the local transport agent?

I have the following settings ( as grabbed from my postconf -n output) alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases append_dot_mydomain = no biff = no broken_sasl_auth_clients = ...
2
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1answer
101 views

Postfix multiple checks

I want to achieve the following with Postfix: Run all emails through a black list Allow any clients sending to a list of domains Allow some clients sending to any domain This is what I have: ...
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0answers
97 views

Collectd / Tail Plugin for Postfix shows Incorrect Numbers

I am using collectd 5.4.0 with CGP 0.4.1 on a freshly installed Ubuntu 14.04 LTS. All default settings work as expected and charts are being generated. To track Mails being sent from the Server, in ...
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1answer
143 views

Allow sender spoofing for specific user on Postfix server with LDAP

So I have a Postfix server that authenticates users against an LDAP directory. This works great so far, but one of the mail adresses should be allowed to set another sender address. All users on ...
2
votes
1answer
76 views

Exclude particular IP address from Postfix log

I have a postfix relay system that uses HAProxy to check to make sure Postfix is responding as it should. There is a front-end load balancer which connects using an internal IP to the backend servers. ...
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1answer
101 views

Postfix a lot of relay acces denied errors in maillog

I'm on Centos 6.5 with Postfix/Dovecot and some virtual domains. Postfix works fine, but I've got a lot of messages like this "NOQUEUE: reject: RCPT from 1-160-127-12.dynamic.hinet.net[1.160.127.12]: ...
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2answers
355 views

Postfix sends email to spam (gmail, hotmail)

I recently installed a postfix + dovecot + dkim multi domain, multi user, multi alias mail server on my debian squeeze system. Everything works except for one big issue that basically makes the whole ...
0
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1answer
232 views

postfix - connection refused from behind NAT

When attempting to telnet postfix from a different host in the same LAN through the FQDN (and thus the LAN's public IP), the following error occurs: root@mailer:/var/log# telnet mail.domain.com 25 ...
1
vote
1answer
33 views

Postfix server to receive emails for anyonymous user

I have a postfix server configured with imap. Only the recipient with the user account in the system is accepted. For example: rcpt to: test@localhost will yield the following error: 550 5.1.1 ...
2
votes
1answer
659 views

t-online.de blacklist “host refused to talk to me” (BL)

I got following error message for several days, as my server tried to send a message to an emailadress at t-online.de: host mx02.t-online.de[194.25.134.9] refused to talk to me: 554 IP=xx.xx.xx.xx - ...
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1answer
110 views

Telnet Postfix on 25 connect but doesn't return any banner

I have configured postfix on RHEL 6.4 and I can connect to postfix on 25 port but no banners return and ehlo doesn't work either. I have uncommented the smtpd_banner line and here it how looks. ...
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1answer
124 views

Tell postfix to merge three Authentication-Results:-Lines into one?

I am running a postfix mta with debian wheezy. I am using postfix-policyd-spf-python, openkdim and opendmarc. When receiving e-mails from google (google apps with own domain) for example, the header ...
0
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1answer
62 views

Use greylisting only if SPF fails

I have noticed that more and more people using the DNS based SPF records and I want to enhance my spam filter. I am using SPF and greylisting after each other and my idea would be to use only ...
0
votes
2answers
7k views

My server keeps sending emails to hostmaster@xxx.com

When I type mailq on my server, I get: BB523653A62 4025 Wed Jun 4 10:40:07 MAILER-DAEMON (delivery temporarily suspended: host p3smtpout.secureserver.net[208.109.80.54] refused to talk to me: ...
2
votes
1answer
85 views

Maximum length of MAIL FROM address

When sending out emails with a MAIL FROM address > 81 characters I receive bounce messages from some MTAs: 501 Syntax error - Badly formatted address. (in reply to MAIL FROM command) As soon as ...
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votes
2answers
40 views

How to enable password for users sending emails to it self? [closed]

All emails users require password but if i login with telnet to port 25, i can send a email without password if the from and to are from a list of valid emails accounts. Can anyone tell me how to ...
2
votes
1answer
52 views

How to add a disclaimer to forwarded messages to outside domains in Exchange 2013?

I would like to implement some kind of filter to add a disclaimer message within emails forwarded to outside domains. Today we have some users that setup filters to forward messages to external mail ...
0
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1answer
151 views

Why don't mails show up in the recipient's mailspool?

I have postfix dovecot running with local email system on thunderbird. I have two users on by ubuntu, mailuser 1 and mailuser 2 whom i added to thunderbird. Everything went fine, except the users dont ...
3
votes
2answers
362 views

Postfix - searching emails (logstash, greylog or other solution)

We are currently having ~100 servers and all of them are using remote syslog, so we have aggregated all logs on one server. The most questioned problem from our support team is: Has an email from ...
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1answer
205 views

Disable ClamAV for Amavis

I have a Postfix mail server, using Amavis and Spamassassin to check for unwanted e-mails. I have removed ClamAV because it'd basically freeze the whole server every time someone received an e-mail, ...
0
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1answer
893 views

postfix failed to start CentOS 6.5

DISCLAIMER: I am new to CentOS, so please forgive me if I overlooked something simple. Here is my issue: I recently just reformatted my server to CentOS 6.5 x64 and I have been having issues getting ...
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0answers
189 views

When does Postfix not perform lookups in virtual_alias_maps?

I'm having a real pickle of a problem: I have a Postfix 2.6.6 / CentOS 6 server that's set up to forward mail from specific aliases to specific destinations. This is done through a mysql ...
0
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1answer
207 views

Specifying a Postfix Instance to send outbound email

I have a CentOS 6.5 server running Postfix 2.6x (the default distribution) with five public IPv4 IPs bound to it. Each IP has DNS and rDNS set separately. Each uses a different hostname at a ...