Questions tagged [postfix]

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

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Postfix SMTP SSL config: Can't send email but can receive it with SSL

I am trying to finish configuring my postfix/dovecot mail server that sits behind my home's router/firewall. I'm on Mint/Ubuntu 12.04. I'm close. I can connect/retrieve emails via SSL but can only ...
sokol99's user avatar
1 vote
1 answer
8k views

Postfix can send but not receive mail

I just finished following this tutorial to set up a postfix mail server on ubuntu 14.04: https://www.digitalocean.com/community/tutorials/how-to-install-and-setup-postfix-on-ubuntu-14-04 When I ...
user4157316's user avatar
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Can't receive mail, but can send mail? Centos 6 Postfix/Dovecot

I followed this tutorial to setup my webmail on centos 6: https://www.rosehosting.com/blog/mailserver-with-virtual-users-and-domains-using-postfix-and-dovecot-on-a-centos-6-vps/ Everything is setup ...
john's user avatar
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2 votes
2 answers
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How to deal with mail senders failing on STARTTLS?

I try to use my mail server richtercloud.de for subscriptions to vger.kernel.org mailing lists. I set up postfix 2.11 running on Ubuntu 14.04 and sending and reception works. I set up postfix to ...
Kalle Richter's user avatar
1 vote
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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 ...
Rupendra's user avatar
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1 answer
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I'm having an issue with all postfix mail being rejected with "relay access denied" - Centos 6.5, postfix 2.6.6

If I use smtpd_recipient_restrictions, everything gets rejected with "relay access denied". If I use smtpd_relay_restrictions, everything gets through and ignores the whitelist. Not sure what's up; ...
Tony's user avatar
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5 votes
1 answer
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Fatal error (bad field count) while configuring Postfix

I'm using this tutorial to configure a mail server using postfix, dovecot and mysql. While configuring Postfix I have to uncomment the following lines and then restart Postfix with service postfix ...
narzero's user avatar
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4 votes
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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 ...
m_junior's user avatar
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Postfix bcc to ldap address

I am using Postfix with AD, and I want to send a copy of every email to their manager. Therefore I have these entries: cn: staff1 mail: [email protected] manager: CN=Manager1,CN=Users,DC=company,DC=...
prd's user avatar
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sysvinit postfix startup script - only called with "status" argument

I'm having a problem with postfix not starting up on boot. boot.log doesn't show any information whatsoever. Starting the postfix service afterwards works as expected. I added debug information to ...
Klaus's user avatar
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1 vote
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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 ...
XeonCore's user avatar
1 vote
0 answers
366 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 ...
charliepage88's user avatar
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349 views

Postfix auth with username containing an at sign?

How can I configure Postfix so that a user sending an email can authenticate with a full email address containing an at sign (@) and a TLD, such as "[email protected]"? Currently my "info" account is ...
Russell G's user avatar
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Server (with Postfix) is forwarding my email using a .forward file, is it still saved on the server?

I'm using Postfix on my server but not really using that for much because I have a .forward file setup for all accounts which forwards the email to someplace else, and never sending through the server....
Fraggle's user avatar
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1 answer
2k views

Linux/Postfix with relay: I can openssl to relay host on port 465, but postfix does not seem to connect

This looks like a tough one to me: I'm configuring postfix on my local home server running ubuntu server 14.04 LTS I was able to send outgoing mail through my relayhost on port 26, everything worked I'...
phaedo's user avatar
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Detect spambot on ubuntu 12 TLS

Recently I discovered in my mail log that there is an enormous amount of spam being sent from my home server. I am running no websites, just zpanel. I closed down all the ports and am monitoring the ...
Ortix92's user avatar
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1 vote
1 answer
3k 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 ...
Niko's user avatar
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3 votes
1 answer
18k views

Postfix Relay Access Denied When Sending To Gmail With Telnet

I have postfix and dovecot setup to deal with mail for my domain. imap appears to work ok when reading local mail but when i try to send an email using telnet with localhost and the smtp port it gives ...
Dan Hastings's user avatar
0 votes
2 answers
473 views

Sending mails and narrowing what script does it

I'm using a very old Ubuntu server that was some time ago a mail server which was infected. Sadly there is a running web page on that server. Some script/page/malware is trying to send a lot of spam - ...
Michal Sapsa's user avatar
0 votes
1 answer
656 views

Strange emails in postfix queue

Currently I am not sending any emails, I have postfix and dovecot installed but in the in the postfix mail queue I see strange emails almost every minute, i dont know from where is this spam ...
TooCooL's user avatar
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1 answer
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Mailx is is not working

I have been trying to send emails throw Linux using echo "hi abhijeet2" | mailx -v Admin [email protected] Whic works fine on other linux system ,but not working my system. I have tried to ...
abhijeet's user avatar
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2 votes
1 answer
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Postfix to send all mail to /dev/null except one address (alias)

My postfix server is working on a particular domain name through a relay, so it's like that: Client send to [email protected] -> domain.com production mail server -> internal mail server on ...
ZackFair's user avatar
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1 answer
287 views

postfix virtual redirect not working properly

I setup postfix on one of my server to redirect incoming mails via virtual.db . I already changed my main.cf and added "virtual_alias_domains" & "virtual_alias_maps" my "virtual" file looks like ...
Kris's user avatar
  • 101
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0 answers
169 views

Local SMTP Server — prevent spam flag?

I opened up port 25 on my router, so now I can use sendmail to send email. However, the emails I send are being marked as spam by my personal gmail account (understandably). The "from" field defaults ...
baum's user avatar
  • 273
2 votes
1 answer
5k 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@[...]>, size=627,...
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1 answer
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Ubuntu + SSL ports + AVAST

I have an interesting problem with communication via standard SSL ports. Fresh installed Ubuntu 14.04 server + Postfix + Dovecot, SASL authentication provided by Dovecot, self-signed certificate ...
jurajvt's user avatar
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0 answers
433 views

Configuring email in PHP for Elgg using postfix

I am trying to setup PHP for running Elgg. I have PHP 5.5 installed in a Ubuntu 14.04 VirtualBox VM. I need to complete the following requirement (elgg requirements page) : Proper configuration and ...
Jake's user avatar
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0 votes
1 answer
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Can't send email to the internet from Postfix mail server. (Relay access denied)

I have a mail server running Postfix in my LAN with which I can send and receive emails in my LAN and send from the WAN to the LAN. I can't send from the LAN to the WAN though. I am trying to use my ...
Pithikos's user avatar
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1 vote
1 answer
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Configuring Postfix as SMTP relay (only)

I have a Postfix 2.5.1 on a Debian 4.0 PPC server. I intend to use this as an SMTP relay for outgoing email from my mobile phone (as my phone service provider recently dropped their SMTP server). The ...
RedGrittyBrick's user avatar
0 votes
1 answer
117 views

Postfix corrupting Japanese characters

I'm having a problem with certain Japanese characters being corrupted when sent by my MTA, Postfix. I've done some trial and error sending the same message from approx 7 different servers running ...
Eaten by a Grue's user avatar
7 votes
1 answer
5k views

Postfix Relay Based on Recepient

What is the best practice when one has to implement this sort of ruleset in postfix: Email sent to [email protected], [email protected], etc ought to be relayed to smtp.a.example.com. Email sent to everyone ...
Chris Smith's user avatar
0 votes
1 answer
671 views

Not able to send mail via Ubuntu VPS

I'm having a Ubuntu VPs with zpanel isntalled on it. There is something wrong going with the mail. Im not not able to receive the mails from my contact form on my wordpress site ( the site is hosted ...
user316398's user avatar
2 votes
2 answers
9k views

Postfix allows unauthenticated users to send emails

Hey I set up Postfix to use cyrus SASL implantation and I'm able to login and send emails, but I can still telnet on port 25 and send mails even if I'm not authenticated, which I whish to deny. ...
Kimmax's user avatar
  • 354
0 votes
1 answer
167 views

Domain [ Understanding ] issue when creating a Linux email server

Ok, here goes my paradoxical question. For about 1 year into my hobby-ish career, I used to buy my domains and a hosting package from Reseller Club. I purchased their " shared hosting " plan and ...
Bimlik's user avatar
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0 answers
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Client computer blocked by postfix

I have been trying to connect from a Windows client computer to a Postfix server running on a Suse Linux Enterprise 2012 SP3 but it has been completely impossible. Connection is not possible either ...
Fiber's user avatar
  • 1
1 vote
1 answer
3k views

Roundcube login error

Using postfix, courier-imap, courier-pop, roundcube I get this error when trying to login through the roundcube web login: [08-Apr-2014 11:44:04 +0000]: IMAP Error: Login failed for [email protected] ...
SilentBoob's user avatar
0 votes
1 answer
77 views

Postfix with two vhosts

I've got this problem: I installed postfix (v. 2.10.2) on Ubuntu 13.04. I've got there two vhosts with two different sites, for example: aaa.com and bbb.com. Got those domains connected with google ...
Uirapuru's user avatar
5 votes
1 answer
14k views

What permissions on /var/mail directory?

I've been suffering a permission problem in Postfix/Dovecot for a couple of days now. The setup is using virtual domains and users, so the path to user's home is /var/mail/<domain>/<user>; ...
jww's user avatar
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0 votes
0 answers
1k views

Postfix/Courier - list known email accounts or addresses

I'm trying to set up an IMAP server. Its a new server in a migration. I thought I completed all the steps from Virtual mailboxes with courier-imap and postfix, but apparently I have missed something. ...
jww's user avatar
  • 12.1k
3 votes
1 answer
6k views

Can postfix forward all outbound email to a relayhost except for local user-to-user email?

On my home Ubuntu box, postfix is configured to relay all outgoing email to outgoing.verizon.net. Unfortunately this includes local user-to-user email (e.g., from local cron jobs to me, or from me to ...
DanB's user avatar
  • 135
2 votes
2 answers
3k views

Mailman + Postfix: unknown user

I set up postfix + dovecot and know that I want to have mailing lists I decided to install mailman. Everything is working except that I cannot send emails to my mailing list (and this is quite ...
Valentin Iovene's user avatar
1 vote
1 answer
1k views

Postfix is Sending Spam [closed]

I have an Ubuntu 12.04 server, hosted on AWS, that powers a dozen WordPress installations using Nginx and php5-fpm. The problem just began one day. My server was down. Panic! Whenever I turned it on ...
Ore4444's user avatar
  • 474
2 votes
1 answer
2k views

Bulk-deleting inbox mails managed by POSTFIX

Had an issue several hours ago with a client mail account, which got compromised. As a result, he had hundreds of thousands of spam queued in postfix, which lead to several issues. Everything's fixed ...
shroom's user avatar
  • 33
1 vote
1 answer
93 views

unable to delete/mark-read emails

I think there is something wrong with the folder-path configuration, but I am unaware how to solve this. I can send/recieve mails over IMAP with my mail applications, but no emails will go marked as ...
Viktor's user avatar
  • 111
0 votes
1 answer
39 views

Disabling sentbox in postfix over Squirrelmail

I have installed POSTFIX over Squirrelmail on CentOS Linux... The services I have ran are: service httpd service ssl service mysql service postfix service saslauthd service dovecot But I want to ...
MLSC's user avatar
  • 175
6 votes
2 answers
5k views

Mixing virtual forwards and virtual mailboxes in postfix

I am setting up a postfix server. The first thing I tried was to deliver mail to virtual mailboxes: main.cf [..] virtual_mailbox_domains = /etc/postfix/virtual_domains virtual_mailbox_base = /var/...
Jasper's user avatar
  • 246
4 votes
1 answer
10k views

Postfix: relay mail to smart host for specifc users

Currently i have a VPS that has a host of email accounts on for several domains. most are simple and have all local mailboxes. but i have one user that wants to have a hosted exchange account but ...
Steve Taylor's user avatar
1 vote
0 answers
340 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 ...
DonCallisto's user avatar
5 votes
3 answers
9k views

Debian sendmail Cannot write

I had a working sendmail configuration on my debian server, i tried to put a postfix to receive email but abandoned, remove postfix, re install sendmail but nothing work anymore :( here is my mail....
Nicolas Beauvais's user avatar
2 votes
1 answer
2k views

Changing X-Original-To: header in postfix

I am using a virtual file with my postfix to redirect all mails coming to my domain to a user My virtual entry looks like this @domain.com root Now the X-Original-TO header shows [email protected]. I ...
Unnikrishnan's user avatar
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