Free and open source mail transfer agent (MTA) that routes and delivers email. When asking about postfix problem, please include the relevant maillog lines and output of the following command: "postconf -n" (content of main.cf) and/or "postconf -M" (content of master.cf)

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-1
votes
0answers
28 views

I think My Email Server Got Hacked

Hi almost everyday my mail server is getting relentlessly attacked. Because of that, several of my users send out spam email without their consent. I've already setup fail2ban but they're kept ...
0
votes
0answers
8 views

Postfix. dovecot, sieve configuration configuration

I recently set up a new mail server using postfix and dovecot but I've got a use case and could use some pointers. We have clients who email us files that then get internally forwarded to a single ...
0
votes
1answer
10 views

Postfix with opendkim: missing id's

I'm setting up a high performance mailserver using multi-instance postfix with TLS and opendkim. This machine is only for sending. All seems to be well, accept when submitting lots of messages the ...
-1
votes
1answer
34 views

How BCC works in Postfix

I'm trying to use postfix feature content_filter like: my_script unix - n n - 10 pipe flags=Rq user=filter argv=/usr/local/bin/my_script.py -f ${sender} -- ...
0
votes
2answers
243 views

How to setup postfix to check SPF record only for domains that i want to check

I have working postfix server. It configured with amavis and uses pretty good SMTP headers control. But sometimes my users receive spam from spammers with well known mail service providers addresses. ...
0
votes
1answer
36 views

Postfix: Alias from multiple adresses to one

I've installed a postfix/dovecot combination on my VPS the last days and everything works fine. Now I want to add mail forwarding, so that mails with a specific suffix, like this: ...
0
votes
1answer
29 views

Spam sent from my dedicated server Centos/Postfix, no idea on how to block people from connecting

I've been reading a lot of topics here for the last 2 hours, made some change and yet I'm not sure how things happened and if things are fixed. First, this morning, I received an email from OVH, ...
0
votes
0answers
14 views

postfix dovecot, lda(admin@domain.ltd) Error: user admin@domain.ltd: Couldn't drop privileges: Mail access for users with UID 150 not permitted

i install postfix, dovecot, mysql on Ubuntu 12.04. and.. see https://www.exratione.com/2012/05/a-mailserver-on-ubuntu-1204-postfix-dovecot-mysql/ by the way.. omg a error. temporary failure. ...
0
votes
1answer
17 views

Postfix: Send email ok without attachment, times out with attachment

This appears to be only happening with one client. I send an email without an attachment and it goes through fine all happy hunky dory, no issues what so ever. This has worked previously (leading ...
2
votes
1answer
138 views

Dealing with spam flood in Postfix + Amavis

I run a mail server for several thousand users. It uses Postfix + Amavis (with SpamAssassin + Clam). Most of the time it's a pretty happy setup, but from time to time we receive a flood of ...
0
votes
0answers
25 views

(Host-)Naming a single server with multiple purposes

My Setup I recently rented a VPS and set up an Apache, a Postfix / Dovecot and a TeamSpeak server on it. When adjusting the Postfix configuration, I had to deal with the server's hostname, which, by ...
0
votes
1answer
30 views

godaddy vps dns setting

I have goDaddy Domain with this dns record a @ 107.150.xx.xx 600 seconds Edit cname email email.secureserver.net 1 Hour Edit cname ftp @ 1 Hour Edit cname www @ 1 ...
1
vote
2answers
45 views

Postfix maildir delivery failed - are my mails lost?

I was facing the problem that postfix could not deliver emails to my home-directory. I have a running Ubuntu 14.04 server and due to some problem with encrypted home-drive postfix was not able to ...
0
votes
0answers
48 views

How to BCC copy all outgoing emails with Postfix?

I have a VPS on DigitalOcean where I have installed Postfix. I'd like to add in BCC an email address of my choice for all the emails that passing through Postfix go to email addresses not in my ...
1
vote
1answer
3k views

Postfix seems too aggressive while sending newsletters

I'm having a problem sending newsletters to certain domains/servers, like yahoo or minor network providers. It's like I'm spamming their servers with connections and they tell me to stop after a short ...
1
vote
2answers
159 views

Spamassassin, Dovecot and Postfix: Move spam to folder

I am trying to move Spam detected by spamassassin automatically to the Junk folder on Debian Jessie. I installed Spamassassin and edited the configs: local.cf (spamassassin folder) rewrite_header ...
0
votes
0answers
19 views

Ubuntu Postfix Courier Imap custom filter to custom folder based on sender address

I am trying to find a way to have incoming mails to a specific folder based on sender address. My setup is on Ubuntu Server 14.04, Postfix mail_version = 2.11.0 Courier Imap with spamassasin, amavis, ...
2
votes
1answer
103 views

Extend Dovecot/Postfix setup with Calendar/Contact Sync

I am currently running a mailserver with dovecot (maildir) and postfix. Now one user has to sync his contacts and calendar with outlook and iOS using our service. The only way to do this seems to be ...
0
votes
1answer
38 views

Connection refused by AMAVISD-NEW

I found here many information to set a AWS server on my own. I installed the DKIM patch and it's work great, but now I can't send mails. I had already problems sending mails, but now are deeper. Some ...
-3
votes
0answers
20 views

Postfix doesn't send mail to outside world [on hold]

My Postfix doesn't send any mail to the outside world. If I send email from say office@domain.com to admin@domain.com, Postfix will send the message, but if I send mail from admin@domain.com to ...
-1
votes
0answers
11 views

can send email, but cannot receive email from external sources postfix / dovecot / webmin [closed]

I can send email just fine to the outside world, but if I try to receive a message from outside, it won't get delivered. Using Postfix / Dovecot Webmin Ubuntu 14.04
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votes
0answers
18 views

Postfix cannot send email. only receive [closed]

I'm setting up a new mail server for my clan with Debian Server and postfix/dovecot. I'm new on this so I have some problems. I'm getting it works only for receving mails from any address outside the ...
1
vote
1answer
42 views

convert plain text passwords to sha512-crypt in dovecot + postfix's mysql mailbox table

I have an old postfix + dovecot + Roundcube mailserver (mail.domain.Tld). Server clock is loosing time and adjusting it causes dovecot to kill itself, we cannot install more memory, bigger ...
0
votes
0answers
29 views

Postfix: status=deferred (delivery temporarily suspended: lost connection while receiving the initial server greeting)

Good day all, I have installed postfix 2.6 on my centos and trying to sent emails through a smarthost, to which I can telnet on smtp port, and failing with subject error. My main.cf is as follows: ...
0
votes
2answers
26 views

Postfix Catchall - Avoid Spam

I've 2 accounts on my CentOS server configured with catchall email accounts. Lately I've been receiving bounced emails with virus that were supposedly sent from my server account, Ex: ...
-4
votes
0answers
20 views

production mail server setup with opendkim, spamassassin, clamAV [closed]

i am told to setup a new mail server? any help will be useful.thanks i advance. postfix/dovecot spamassasin clamAV opendkim etc... any help or useful tutorial will be great..
-2
votes
0answers
22 views

multiple domains on the same smtp server

I have configured an email server according to this tuto - sorry in french. It's a postfix with mysql, dovecot, roundcube and postfix admin. I had to change some configuration but this is working well ...
6
votes
1answer
78 views

Trying to setup mail server, can't get ports (25, 587) to work

I've searched everywhere and I'm really struggling with this one. I think I've tried just about everything. Background info VPS with CentOS 6.7 Postfix 2.6.6 dovecot, amavis, mysql, fail2ban I've ...
2
votes
0answers
16 views

PAM vs /etc/shadow in Dovecot SASL configuration - Security differences?

I set up a server with Postfix SMTP auth through Dovecot SASL. However, it was not possible to get the PAM authentification working as standard out of the box. So more by chance, I changed it to ...
-3
votes
1answer
20 views

Telnet times out on local machine but works externally

Im trying to get inbound mail working with postfix. Nothing is showing up, even in the maillog. Outbound works perfectly, but inbound doesnt. If i use telnet from an external server over port 25, i ...
-2
votes
1answer
26 views

postfix mail server not configured in outlook

I have configured postfix mail server with squirrel mail web client. I'm able to success send out mail through squirrel mail/web mail but when I tried to configure it in outlook then smtp is not test ...
1
vote
1answer
1k views

Moving Maildir directory out of /home

I have a computer with Ubuntu 13.04 with a local IMAP server that I use to share email over the LAN. I set this computer up to have an encrypted /home, however this therefore means that anyone logging ...
1
vote
0answers
12 views

Sieve saved EICAR virus to Junk folder but also disregarded in the log

I have setup my own mail server by partially following the guide (series) here The sieve filter rule is: ... truncated ... # Trash messages with improperly formed message IDs if not header :regex ...
0
votes
1answer
31 views

Postfix can not receive mail with error: amavis[15499]: () (!)DENIED ACCESS from IP x.x.x.x, policy bank

My mail server ran very well. But after my setting an OpenConnect VPN on the mail server, I found the server could not receive mails from outside. For example, my host IP is 1.2.3.4 I did tail -f ...
1
vote
2answers
34 views

Correct DNS settings for postfix

I'm currently planning my new mailserver and can't stop thinking about one simple thing: The DNS settings. Most MX records look like mail.doomain.tld or mx01.domain.tld. Are there any advantages of ...
0
votes
0answers
45 views

postfix dovecot lmtp status=deferred (connect to domain.com[private/dovecot-lmtp]: No such file or directory)

I'm setting up my own Ubuntu mail server at home (postfix-mysql-dovecot-roundcube) with a MX registered domain (here in my example it will be "domain.com"). My main.cf : # Debian specific: ...
0
votes
0answers
24 views

Postfix Not Sending Or Receiving Emails

I followed this tutorial to setup a mailserver on my centos VPS: https://www.linode.com/docs/email/postfix/email-with-postfix-dovecot-and-mysql-on-centos-6 And I am able to send emails to my account ...
0
votes
1answer
14 views

postfix/opendkim not sign email from php on second domain

I have two domains, called them example1.com and example2.com on example1.com all emails sent with dkim sign. on example2.com emails from php sent without dkim sign, but if send email from console, ...
0
votes
1answer
24 views

Mutt suddenly stopped sending emails with attachments via Postfix

Issue arose when an attachment froze at the send stage (after uploading fine) in mutt 1.5.24. I updated to mutt 1.6.1, same compile flags, but still didn't send. Tested in Thunderbird (icedove) and it ...
0
votes
4answers
20k views

SMTP don't work when try to send mail from mail client

Mail server works fine when send mail from server, but when I use some mail client it not work. I found this in logs: Jul 12 19:45:04 tvsite postfix/smtpd[3356]: warning: hostname adsl-bb29-l44 does ...
1
vote
1answer
8 views

Postfix not detecting hostname or domain

I'm having a problem with Postfix (on Centos 6.5) whereby I have to set myhostname explicitly in main.cf, otherwise local mail is relayed through the relay host. According to the Postfix main.cf: ...
1
vote
1answer
18k views

Postfix “timed out while sending message body” to “Microsoft ESMTP MAIL Service”

For some reason we cannot send larger email to one of our customers. Small emails are fine, but even a message with a 1MB attachment fails to deliver for several hours - Postfix logs keep filling with ...
0
votes
0answers
20 views

Postfix + Dovecot: Tracking down missing, but delivered email

I have an odd issue. It appears, according to my maillog, that someone has emailed me and that my server accepted - and delivered - the email. Yet the message isn't in my inbox, and I haven't seen any ...
0
votes
1answer
134 views

Getting unknown mail requests on my SMTP server

I set-up a private mail server on my VPS. I get a lot of mail request on the SMTP server while I did not send them by myself. I disabled the bounce mail to prevent spamming other mail addresses. How ...
1
vote
2answers
64 views

huge amount of data is written to mail.log once every minute

I'm on Ubuntu server and a huge amount of lines is written to my /var/log/mail.log once every minute. The lines look like: Mar 11 17:39:08 Ubuntu-1010-maverick-32-minimal postfix/qmgr[1085]: ...
2
votes
2answers
10k views

dovecot-lmtp does not exist

I followed this guide on linode to setup dovecot and postfix mail server on my Ubuntu 12.04.2 LTS . The setup requires socket /var/spool/postfix/private/dovecot-lmtp to act as virtual transport. ...
-1
votes
0answers
40 views

Postfix does not accept mail from my client or other servers

My setup: Primary machine is Windows, and I'm using Mozilla Thunderbird as my email client. IP 192.168.1.99 Server with 2 network cards running Arch acts as my router and firewall (with Shorewall). ...
3
votes
1answer
2k views

Alternative to postfix with SNI certificates + Dovecot compatibility

As we're aware postfix doesn't support SNI (Server Name Indication), which means that if you'd define a certificate, it will be used for all domain names that you have on that server, which could be ...
0
votes
1answer
39 views

recipient address rejected - helo/hostname mismatch

there, I'm in a bit of pickle and was hoping someone could provide some assistance. I have a mail server, [sending.server.com] trying to send to another server to [target.server.com] from ...
6
votes
1answer
10k views

SASL LOGIN authentication failed: UGFzc3dvcmQ6 - Find the username

First let me state that the mail server is working fine and users can connect and send email. Basically there is a local web script connecting into the mail server trying to send mail every few ...