Postfix is a free and open-source mail transfer agent (also "MTA"), written in 1997 and still actively developed.

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6
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582 views

Connection timing out when connecting to Milter service

I'm using a VPS with CentOS 5, containing Postfix and OpenDKIM. I have set up OpenDKIM using this guide. Everything seems to work properly as the log in /var/log/maillog does not report anything other ...
4
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0answers
129 views

dovecot WILDCARD SSL (certicate.crt, private.key, intermediate.crt) not working

I have installed dovecot and postfix and got it working, but when I change the ssl_cert_file, ssl_key_file and ssl_ca_file dovecot configuration to my WILDCARD SSL certificate (working on apache) it ...
2
votes
0answers
91 views

Can I reconfigure postgrey to keep mail instead of rejecting it?

I have postgrey on my mailserver and it works really well. I actually suspect it works a little too well in that there are quite a lot of faulty mailservers out there that don't bother retrying. ...
2
votes
0answers
394 views

Remove root@localhost from e-mail's headers

I am trying to install an e-mail server in my CentOS server. I have installed and configured postfix and bind, but when I send e-mails I still get "root@localhost" and 127.0.0.1 in my e-mail's ...
2
votes
0answers
543 views

“Recipient address rejected” when sending an email with sendgrid

In postfix, I'm using relay_host to send an email to an external address using sendgrid, but I get an error about local ricipient table when sending an email from my PHP code. This is my main.cf in ...
2
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0answers
530 views

Postfix: change sender address of bounce (mails from fetchmail)

I am running a Postfix MTA. Fetchmail is used to get mails from several POP3 accounts. The problem is: If a mail cannot be delivered, e.g. because it exceeds the size limit of the mailbox, a bounce ...
1
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0answers
39 views

How to bounce an email

I'm getting spam (thanks to NameCheap not properly cloaking my email address), and I'd like to bounce the emails back to the spammers so they think my account doesn't exist. They're not forged From ...
1
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0answers
24 views

Problems with postfix and sending mails

I have ran into problems while configuring my postfix for my CENTOS machine. Note:The mailserver itself should be localhost only and only be able to send mail internally. the following shows up when ...
1
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0answers
121 views

Signing-milter / SMIME - how are this email signed incorrectly?

I have a problem with signing-milter (http://www.signing-milter.org). The problem is that the -b flag is required, and the -b flag is not recommended because it outputs non-RFC compliant email. ...
1
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0answers
48 views

Conditional relay with credential based on domain recipient?

I use postfix to send email directly, but sometimes outlook.com won't deliver my business email messages. After changing the SPF record, the delivery succeeded, but goes to the recipient's Spam ...
1
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0answers
328 views

Postfix - SMTP mail delivery failed with “Connection timed out” error

I have installed postfix mail server in ubuntu machine. I am facing some issues with the mail sending to other domain mail servers (Google, Yahoo, Outlook...). I am using virtual domain to send the ...
1
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0answers
55 views

Postfix - relay issue on my end?

Maybe someone experienced more than me in Postfix can help me out a bit. mail.log:Dec 11 22:14:36 server596 postfix/smtp[31301]: 3A5BC17AC00D: to=<int@njsbw.com>, ...
1
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0answers
110 views

How can I have Postfix add a header to all outgoing mail based on command?

I would want to have postfix to run the command: /usr/bin/hashcash -mXb 26 <RECIPIENT1> <RECIPIENT2> ... <RECIPIENTn> and add the output of this command as a header. How can this be ...
1
vote
0answers
77 views

Multiple postfix instances one host

I have a server on which i need to add setup a second postfix configuration to send e-mail (doesn't have to receive) that's being sent in from a PHP web application that's hosted on the server aswell. ...
1
vote
0answers
25 views

How to add new 'From' email id each time sending email using PostFix server

I am new to PostFix and have setup PostFix as a server recently. In the testing, PostFix is working fine and relaying the emails with 'From' email address stored in the PostFix credentials files likes ...
1
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0answers
128 views

Duplicate and relay mail from postfix

We currently use Google Mail for our teams email. We want to move to a self-hosted email server. Some of our team members prefer using Google Mails interface and asked if we could continue having ...
1
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0answers
120 views

Email Issue - “On Behalf Of Blackhole”

I am experiencing an odd email issue that I haven't been able to find any answers to. I have a Ubuntu server setup with postfix that uses mailgun to send emails. I'm not using the mailgun API, just ...
1
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0answers
303 views

postfix doesn't work with IP as hostname

Using Ubuntu 14.04 x64 I had a working installation of Postfix which was handy for sending emails in my terminal, but I had an issue with an application that was critical for my workflow. In order ...
1
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0answers
2k views

Google Mail blocking emails sent by postfix

I have set up an email server, but I have a problem with sending mails to Gmail. This is my /var/log/mail.log: Jun 4 20:49:26 jenny postfix/qmgr[6064]: 4CBDB67482: from=<mail@[...]>, ...
1
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0answers
138 views

Email Spoofing - Bounce back messages

A client of mine (onto my mail server) receive back some bounces for mails that he haven't never sended to non-existent addresses. Of course, inspecting the header, the outgoing server isn't mine. I ...
1
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0answers
121 views

Postfix receives mail, seen in /Maildir/, but no mails when connecting through Thunderbird (IMAP)

/var/log/mail.log seems fine to me Dec 10 16:30:21 server dovecot: imap-login: Login: user=<mailtest>, method=PLAIN, rip=my.ip.addr.xxx, lip=ser.ver.ip.addr, mpid=23682, TLS, ...
1
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0answers
64 views

Query regarding smtp_fallback relay in postfix

I have 3 postfix instances in my server. I am trying to configure my server in such a way that, the deffered mails in 1st instance need to be relayed to the 2nd instance. Thereby i can reduce the ...
1
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0answers
447 views

mozilla thunderbird can receive emails but cannot send (imap/postfix)

i run a dovecot imap server on an ubuntu 8.04 machine (old, i know, but there's no chance of an upgrade any time soon). anyway, all was working smoothly until i rebooted the server the other day and ...
1
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0answers
261 views

Configure Ubuntu Server VPS to send mail without going to spam

I have installed and configured Postfix on a VPS. I have managed to get it so I can send and receive mail. However every time I send mail from It, it get's marked as spam and was wondering how I ...
1
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0answers
126 views

OpenDKIM Signing return fail when spaces in mail

Few days ago I install OpenDKIM Signing using on my CentOs 6 server by manual - http://stevejenkins.com/blog/2011/08/installing-opendkim-rpm-via-yum-with-postfix-or-sendmail-for-rhel-centos-fedora/. ...
1
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0answers
181 views

Postfix configuration issue?

I don't know if it is the right place to answer this question (please tell me I will remove it). I have an error message when using telnet to send an email to ab account I have specified in my postfix ...
1
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0answers
230 views

postfix mail queue - get bottleneck - Debian squeeze

I have a problem with Postfix 2.7.1, Debian Squeeze: send and receive mail with no problem working locally, send e-mail outside work without a problem, the problem is when someone sends a large ...
1
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0answers
303 views

Dovecot/Postfix-mysql e-mail Aliases are not correctly forwarded

I recently set up Dovecot/postfix-mysql on my Debian Squeeze Server and I have a bit of a problem. When ever I send a email to an alias (foobar@mydomain.com forwarded to foobar@gmail.com for example) ...
1
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0answers
200 views

In Ubuntu 12.04, how do you tell saslauthd to use getpwent instead of PAM?

I have a fresh install, upgrading from ancient Ubuntu 8.x, and I just can't figure out where this setting is supposed to be in Ubuntu 12.04. Please help! Thanks
1
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0answers
232 views

Ubuntu 10.10 Desktop: configuring postfix to send mail as

I have been learning how to use postfix to end email using the command line, which I find helpful when at work and I don't want to open a browser or switch to mouse, to send an email about my broken ...
1
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0answers
289 views

DKIM milter with Postfix doesn't sign additional headers passed to PHP mail() function

I use CentOS server with Postfix for mail sendind and my PHP application use mail(0 for mail sending. Some "FAQ" problem with this setup have been solved quickly using Google (e.g. passing "From" ...
0
votes
0answers
5 views

Postfix + Dovecot prevent vUsers to override previous Replies on the eMails

After I installed the iRedMail (Postfix, Dovecot, ....), the Business Request is to prevent the Users edit the Previous eMails Bodies during their Reply, Reply all, or Forward. I searched for ...
0
votes
0answers
24 views

Mail classified as spam due to incorrect timezone in Date: header

I'm running a mail server using Postfix and Dovecot. My problem is that my emails are getting classified as spam, even though I have PTR, DKIM, DMARC and SPF set up correctly. The test on ...
0
votes
0answers
36 views

Receiving email on linux

I have a CentOS box with a basic postfix instance installed that has a relay configured. The box can send emails to the outside world (ie Gmail, Yahoo). The question is how can I get this box to ...
0
votes
0answers
18 views

Why use both Dovecot and Postfix?

Just out of curiosity, there are dozens / hundreds of tutorials helping you setup a dovecot - postfix mail server. On the surface, both of them are email servers, why use both? Mail servers are ...
0
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0answers
7 views

Postfix - How to send local mail with attachment?

I followed a guide on how to set up Postfix for local mail delivery. Guide: http://cafim.sssup.it/~giulio/other/Postfix_Setup_for_Local_Mail_Only.html I would like to send mail containing a single ...
0
votes
0answers
20 views

Postfix virtual map to username at domain

I'm trying to have postfix forward emails sent to a few different emails at a domain to the same Gmail address. I have gotten it to forward 2 of the 3 emails addresses I'm trying to forward but the ...
0
votes
0answers
15 views

Unable to send email using PHP

I have postfix installed, but can't get it to send any email. I'm not sure what the problem is, it could be postfix it could be something else. I just can't get php to send mail Here is my setting's ...
0
votes
0answers
28 views

Postfix install fails. MySQL conflict

I'm using CentOS 6, and trying to create a virtual mirror on a new server of an old one (which someone else setup). As much as possible, I want keep everything with the same version, but I've started ...
0
votes
0answers
38 views

Postfix - Alias users SMTP login

I have a postfix mail server, and am looking for a way for aliases to send mail. For example, I have the user alias@example.com which redirects to myemail@gmail.com defined in my mysql mail_aliases ...
0
votes
0answers
68 views

Postfix Outgoing mail not working from external locations

I'm currently trying to get Postfix and Dovecot to work on my Ubuntu server, and it partly works. I got it working on Roundcube. I was able to send mails to and receive from external servers like ...
0
votes
0answers
31 views

I don't recieve virtual alias email from my postfix/dovecot server in Gmail

For some reason the regular virtual user email accounts like admin@example.com comes into Gmail via POP3/IMAP just fine - but none of the virtual alias email comes into GMail! Gmail says it retrieved ...
0
votes
0answers
14 views

DoveCot users + multiple domains

Hi I am trying to get dovecot to work with multiple domains My /etc/aliases looks like this # See man 5 aliases for format postmaster: root shop: shop ben: ben When I try changing it to ...
0
votes
0answers
30 views

Prevent Fake E-Mails with Postfix

I have a secure and almost-properly-configured SMTP/Dovecot server running, but I do have a problem. As it's currently set up, anyone (who has valid credentials) can send e-mail from any address in ...
0
votes
0answers
223 views

Relay access denied (in reply to RCPT TO command) Postfix Issue

I am trying to configure my server for email taking reference form this link: koray.me/smtp-relaying-outgoing-mail-in-postfix-using-webmin. I used Mandrill smtp server in my case. I have also ...
0
votes
0answers
64 views

The emails sent by mandrill are soft-bounced by the postfix server

We have a app written under php (symfony2) and we are sending a certain type of email via mandrill. It works the past months but now all the emails sent to info@domain.com are being soft-bounced and ...
0
votes
0answers
29 views

make postfix bypass amavis completely for specific domains

I want the postfix agent to bybass the amavis scanner for all mails from and to a specific domain. So, i added the following line to /etc/postfix/main.cf header_checks = ...
0
votes
0answers
14 views

Postfix errors when triggering mails from a server different than the mailserver

We used to have a server for everything, where our PHP scripts and the mail server would run on the same server. Now we moved our php scripts to a different server and we seem not to be able to send ...
0
votes
0answers
334 views

smtps service not found/“warning: connect to transport private/smtps: No such file or directory”

I'm trying to access an SMTP smarthost example.com using TLS via port 465 by adding smtps inet n - n - - smtpd -o smtpd_tls_wrappermode=yes -o ...
0
votes
0answers
23 views

postfix multi bcc_sender_maps

I am trying to configure postfix to send mails to multiple e-mail address using sender_bcc_maps user1@domain.com -> bcc1@domain1.com bcc2@domain2.com my configigurations is postfix + vusers (sql) ...