Questions tagged [postfix]

Postfix is Wietse Venema's mail server that started life at IBM research as an alternative to the widely-used Sendmail program.

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1answer
949 views

Postfix header_checks

I want to forward a copy of the users email which has the specific subject. I have tried the below settings, able to Redirect that particular subject mail. But I want to forward a copy of that mail to ...
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3answers
4k views

unable to view postfix email from centos 7 command line, why not?

I have postfix installed on a development box and I used the parameters from this other posting to configure postfix to work on localhost only. But the other posting does not explain how to send ...
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1answer
466 views

Is email domain name the hostname of the mailserver (eg.) Postfix [closed]

When i install postifix mail server on ubuntu ....I need to have a FQDN .....is this the name of the server or the email client that will send mail to this server .....what is the actual mechanism ...
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2answers
6k views

How do I read Maildir RFC822 messages from the CentOS 7 terminal?

In a CentOS 7 server with dovecot, postfix, mailx installed, I have mail configured to be stored in Maildir format. How can I use the terminal to access and view the RFC822 messages stored in a ...
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1answer
184 views

Using egrep in /var/spool/postfix returns no results

My machine is using CentOS 7.1. I'm trying to search through all the files within /var/spool/postfix. The way I'm trying to achieve this is with: $ egrep -lir --include="*.*" "somemail@somedomain....
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1answer
225 views

postfix modify subject based on sender

There is a map: email1@example.com ONE email2@example.com TWO email3@example.com THREE How to change subject in mails sent to test@example.net this way: (from email1@example.com, original subject ...
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1answer
1k views

How to Create a PTR Record for AWS Mailserver's Elastic IP Address

I configured an SMTP server (Postfix) on an AWS instance. However, as a defense against spam most well-managed emailservers will reject messages sent from any host whose IP does not resolve back to ...
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1answer
1k views

Python errors in Postfix Policyd-spf config: "warning: problem talking to server private/policyd-spf"

Implementing pypolicyd-spf support in Postfix 3.3.1 on RHEL 8, encountered following error in /var/log/maillog: spawn[xxxx]: fatal: spawn_comand: execvp /usr/bin/python: No such file or directory ...
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1answer
536 views

I'm not receiving anything in my inbox I set up using ISPConfig. How do I fix this?

Before I upgraded to Debian Stretch, I had to manually install ISP-Config and adjust a bunch of other things before I could even install it. Now, when I went to check for a new version to run on ...
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1answer
467 views

Postfix configuration Error, Status=dereffered... But where?

smtpd_use_tls=yes smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache # See /usr/share/doc/postfix/TLS_README....
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1answer
271 views

how to prevent cron job email splitting into multiple lines

CRON has emailed me the extract below : May 12 04:27:54 rpi postfix/smtpd[9343]: NOQUEUE: reject: RCPT from unknown[95.211.213.214]: 504 5.5.2 <WIN-HBAL58UG0JH>: Helo command rejected: need ...
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1answer
3k views

Problems with postfix/dovecot unable to receive mail

Can't receive mail on my server but can send just fine. From what I can tell in the logs, it complains about timing out. I check the connection externally using telnet from my PC, I can connect to ...
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1answer
108 views

Auto Blacklisting in Postfix

I have numerous Postfix directives which successfully limit abuse. HOWEVER: After a restriction is enforced, the abuser just reconnects and goes through the complete process of re-failing the same ...
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1answer
1k views

Postfix has been hacked please help [closed]

I installed postfix and dovecot and set up SPF DKIM and DMARC and everything was running smoothly, till my Linode account reported high usage, upon checking I found a large amount of spam going out ...
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1answer
961 views

Can’t send email – postfix/sendmail error referring to command line

I have a PHP script under a Wordpress theme sending emails using the mail() function.  I have postfix, dovecot and sendmail installed on the server. Mails are not being sent from that script.  After ...
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1answer
879 views

How to configure my linux machine to send emails from terminal [duplicate]

How to configure my linux machine to send emails from terminal. I tried the following apt-get install postfix mailutils sudo systemctl start postfix echo "Email Text" | mail -s "Subject" "user@...
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2answers
106 views

Google treats mail from my mail server as spam [closed]

Does anyone know what's wrong with my server? Messages are sent to spam. Delivered-To: donia.chromik@gmail.com Received: by 10.103.46.145 with SMTP id u139csp1708503vsu; Sat, 27 Jan 2018 08:...
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1answer
709 views

Postfix can not send from Mydomain - only to third party domains

So I have setup an Ubuntu server and want to use postfix in order to sendmail via php. The server host: example.com When the server sends an email to anything@example.com, I get an error. If sending ...

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