0
votes
1answer
58 views

Should I put SPF checks before or after RBL checks in Postfix SMTP server?

I am setting up a Postfix SMTP server (pre v2.10) and was thinking to put the smtpd_recipient_restrictions as follows. smtpd_recipient_restrictions= permit_mynetworks, ...
0
votes
1answer
199 views

Postfix / dovecot won't work

My configuration of dovecot - postfix - postfixadmin won't work. Since i'm pretty new to emails, i followed this tutorial My server is an Ubuntu 13.04 server. Email sending from localhost works as ...
0
votes
0answers
79 views

Why am I getting this warning in my log about mydestination and virtual_mailbox_domains?

I found another question on serverfault that has the exact warning message, but the question is different and there are no acceptable answers. I have a dedicated linux server with Plesk. I've noticed ...
0
votes
1answer
746 views

How do I set up Postfix *_restrictions configuration parameters safely with whitelists and blacklists?

Learning and Trying to Understand I've spent the last week learning about what Postfix can do to help reduce spam. If I understand correctly the different *_restrictions configuration parameters ...
0
votes
0answers
21 views

Accept emails from specific user in multidomain

I want to know if is it possible to accept emails from specific user without domain differences. Example: info@domain1 accept info@domain2 accept test@domain1 bounce test2@domain2 bounce I need to ...
1
vote
0answers
25 views

How to add postfix address that gets piped through script

I have a Debian server running postfix. In the file /etc/postfix/main.cf there is this line: mailbox_command_maps = pcre:/etc/postfix/mailbox-pcre The file /etc/postfix/mailbox-pcre contains lines ...
3
votes
1answer
63 views

Why Postfix on Linux require a “-” character before the pathname?

I´ve found the following here: IMPORTANT: on Linux you need to put a "-" character before the pathname, e.g., -/var/log/maillog, otherwise the syslogd process will use more system resources than ...
0
votes
1answer
123 views

Postfix - sender dependent configuration based on client IP instead of email address

Using Postfix, I want to setup the transport according to the sender IP. There is sender_dependent_default_transport_maps, which does it according to the sender email address (envelope MAIL FROM). ...
0
votes
1answer
325 views

Postfix: 550 No Such Domain at this Location

I am trying to configure Postfix on a Linux server to only send outbound mail. I have followed the null client tutorial and my Postfix settings are set according to that tutorial. The email is ...
0
votes
2answers
87 views

postfix email gateway

I am setting up a postfix email gateway. It will not hold any mail but will accept email for my domain and forward it to another internal mailserver and relay mail out from the internal server. One ...
0
votes
1answer
304 views

Someone used my postfix smtp (port 25) to send spam mails to me

This week, someone started to send spam-mails through my postfix-smtp access (I verified by logging in through telnet from an arbitrary pc and sending mails with any ids myself) on my server, with ...
0
votes
1answer
153 views

How do I limit sender domain for mail sent to specific forwarding addresses in Postfix?

I presently have a Postfix installation happily delivering mail (webmail/IMAP) for 100+ users at our company, broadly divided among several domains (sales, operations, management, etc). Recently, ...
4
votes
1answer
574 views

postfix TLS configuration for incoming gmx-mail

I set up my mailserver with postfix 2.7.1 and dovecot 1.2.15 and everything seemed to work just fine, but now I found out that people using @gmx.net addresses cannot send emails to me and rather ...
3
votes
1answer
228 views

Postfix - how to redirect email if they will rejecting?

I have problem with spam and postfix + postgray. It generally good works but I have false-positive still and reject good email. And now I have problems. Can I configure postfix (and postgray) that: ...
0
votes
3answers
310 views

Postfix add computername on subject

I have several ubuntu servers / desktops running on the same machine using kvm (under ubuntu server 12.04) With postfix on each virtual machine I've redirected each root's mail to my gmail account. ...
0
votes
1answer
188 views

Host rejected: cannot find your hostname - for one adress

We have computer with 91.221.27.120, 91.221.27.119, 91.221.27.121 and 91.221.27.118. I set in postfix: smtpd_client_restrictions = permit_mynetworks, warn_if_reject reject_unknown_client, ...
2
votes
1answer
205 views

2 separate postfix instances and confusion with IP's in received field of mail message

i have a problem with my 2 postfix instances. 2 separate IP's and coressponding domain names are setup on networking, they are working fine. I want second mail message (below) to have Received: from ...
0
votes
1answer
5k views

Postfix: How to apply header_checks only for specific Domains?

Basically what I want to do is rewriting the From: Header, using header_checks, but only if the mail goes to a certain domain. The problem with header_check is, that I can't check for a combination ...
2
votes
1answer
11k views

Fixing 'Relay access denied' in Postfix

Before you claim about duplicates and so on, I've checked these topics: Postfix "Relay access denied" How to Correct Postfix 'Relay Access Denied' Problem? The above topics ...
0
votes
4answers
5k views

What are default postfix smtp settings?

This may be a lame question.. All the time I was using postfix to send mails via my rails app. I just install postfix via these commands, cause i never really thought about the what actually going ...
2
votes
1answer
520 views

Postfix forwarding mail with virtual mailboxes present

I have mail server setup to use postfix and cyrus imapd + ldap for mail lookups. Now I would like to specify that for particular address (e.g. someuser@domain.com) instead of delivering mail to ...
2
votes
1answer
130 views

Why doesn't Postfix deliver from local accounts to local accounts?

I have postfix installed on a machine named smtp.mydomain.com with a a virtual domain of mydomain.com. If any email arrives at smtp.mydomain.com for a local user on that machine from an external SMTP ...
0
votes
2answers
974 views

What does it mean to setup Postfix as “SMTP only”?

I am trying to setup Postfix a few different domains on a virtual host. I need to have email setup just to send out registration confirmations and new password requests. No one will have a mailbox on ...
-1
votes
1answer
2k 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 ...
1
vote
2answers
786 views

How to set Postfix configuration to cach-all emails in domain but excluding some addresses?

How to set Postfix configuration to cach-all emails in domain but excluding some addresses?
0
votes
3answers
409 views

Postfix 554 <demo@demoslice.com>: Relay access denied

So i am trying to set postfix up and I am running into some problems.....here is my files vim /etc/postfix/main.cf relayhost = [smtp.gmail.com]:587 smtp_connection_cache_destinations = ...
1
vote
2answers
1k views

How to reject email sent to root@mydomain.tld from external sources in postfix

I have a postfix mail server correctly configured (I hope) and running on openSUSE 11.3. I can send email to local users from any location, but this also means that I (or anyone else) can send remote ...
1
vote
1answer
454 views

Postfix relaying : email to multiple addresses with one relay

I have postfix installed on an ubuntu server so my website can hand it email to relay onto sendgrid.net. Before I installed postfix I setup swiftmailer to send the email directly to sendgrid.net, and ...
5
votes
2answers
502 views

Postfix server configuration values explained?

I am trying to setup a single server to send out email from a single domain but I'm having trouble identifying the correct values for these Postfix settings. mydomain = example.com myhostname = ...
0
votes
1answer
574 views

Impossible to send email using Postfix behind Squid proxy server

I've just installed this pre-built virtual machine which is built on Ubuntu Server 10.04 and works greatly but I can't send email from command line. I'm 100% sure it's a configuration problem of the ...
1
vote
1answer
541 views

Is it possible to disable “retry” from bounce mails in postfix?

I am doing mass BCC email's for mailing list, and receive too many bounces, Is there a way to stop it from retrying? I have been searching around and can't seem to find the answer, if anyone can ...
0
votes
2answers
260 views

Do I need to enable TLS support for postfix?

I need to send out notifications from my web-app and I've setup postfix as a null client on my server. So in my /etc/postfix/master.cf I have commented out the lines #smtp inet n - ...
0
votes
3answers
414 views

How to make spamassasin reject mail based on score?

I am running linux with postfix, dovcot, postgrey and spamassasin/spamd. This is my main.cf smtpd_recipient_restrictions = permit_sasl_authenticated, ...
4
votes
5answers
4k views

Outgoing only SMTP server

I want to setup an outgoing only SMTP server on Debian, so my Web-applications will be able to send e-mails via it. I don't want to use another hosts because of security and customizability of my own ...
2
votes
2answers
11k views

Postfix is rejecting some incoming emails (“Client host rejected: cannot find your hostname”)

Our postfix sometimes rejects emails. I see this error in our postfix log (/var/log/mail.log): Feb 9 16:16:33 sd-15xxx postfix/smtpd[1972]: NOQUEUE: reject: RCPT from unknown[x.x.x.x]: 450 4.7.1 ...
1
vote
2answers
1k views

Postfix Configuration / Emails Rejected by Some Senders

I'm a developer for an online web service. A supplemental component of our main product is a feature whereby users can forward emails to us and have them automagically imported to the appropriate ...
1
vote
2answers
5k views

disabling postfix “Undelivered Mail Returned to Sender”

Greetings, Is it possible to disable the postfix notification "Undelivered Mail Returned to Sender"? Since I receive too much spam with forged senders, I don't want postfix to notify these forged ...
1
vote
2answers
206 views

Email Server Configuration

I don't use Linux regularly, but do occasionally and I'm struggling with the email configuration that I'd like to get. I've run through a lot of information and tutorials on configuring Postfix and ...
1
vote
1answer
166 views

Ubuntu Hardy Postfix: Configuration problem?

I've installed posfix and my web app is now successfully sending mails. However, the mails have the following text at the start of each mail: Content-type: text/html; charset=iso-8859-1 From: ...
2
votes
4answers
21k views

Postfix Configuration problem (domain of sender address does not exist)

I am setting up a linux server that I want to send mail independently of our main mailserver (ie. directly). The problem is, when I send mail to an external address, it bounces with the message ...