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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0
votes
1answer
15 views

Dovecot, Courier, Postfix Differences

[This question might be against SO guidelines - too vague - too subjective. I have however failed to find an answer] Like this: Dovecot vs Courier vs Cyrus What is the difference between Postfix, ...
0
votes
0answers
14 views

Fail2ban on CentOS, dovecot filters regex not matching logs

I'm starring at this regex for some time now and it seems perfectly matching lines from my log files but I can't get it to work, not even with modifications. I suspect the problem might be with the ...
0
votes
3answers
24 views

Testing Zimbra email routing

I am an experienced Exim user and just recently testing Zimbra Open Source, and I am loving it already. However, I am used to this command whenever I wanted to test email routing in the email server, ...
0
votes
0answers
13 views

Debian Cyrus SASL LDAP Auth fails

I am in the middle of an emergency server transfer from a server I did not setup to a new piece of hardware. I am running the newest Debian with Postfix and Cyrus. I have copied over the majority of ...
0
votes
0answers
14 views

Roundcube: AUTHENTICATION PLAIN: Authentication failed

I installed Postfix, Dovecot, Roundcube, Postfixadmin on Amazon EC2 Linux. I configured Postfix, Dovecot, Roundcube and Postfixadmin one-by-one, and I can create new mailbox via Postfixadmin. ...
-1
votes
0answers
37 views

I think My Email Server Got Hacked [on hold]

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 ...
1
vote
1answer
17 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, except that when submitting lots of messages ...
0
votes
0answers
15 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 ...
0
votes
1answer
33 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
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
31 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 ...
-2
votes
1answer
36 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
0answers
51 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 ...
0
votes
1answer
39 views
+50

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, ...
-3
votes
0answers
20 views

Postfix doesn't send mail to outside world [closed]

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
12 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
-1
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 ...
0
votes
0answers
33 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
28 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: ...
-2
votes
0answers
27 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 ...
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 ...
7
votes
1answer
84 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
1answer
27 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
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
38 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 ...
0
votes
0answers
49 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: ...
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
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
39 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
15 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
26 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 ...
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: ...
0
votes
0answers
21 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 ...
-1
votes
0answers
44 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). ...
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 ...
-1
votes
0answers
20 views

fedora 23 - firewalld blocks imaps smtps

I'm having a weird problem. I can successfully connect to dovecot and port 465 and 993 is open but I can't receive emails as long as firewalld is enables and started. What is going on?
0
votes
1answer
12 views

Skip filter for mails from some hosts

The context: I currently have a main MX that run spamassassin trough a direct filter: smtp inet n - n - - smtpd -o content_filter=filter filter unix - n ...
0
votes
1answer
27 views

Postfix, SPF, and Perl: warning: premature end-of-input on private/policy while reading input attribute name

I followed this guide (http://www.thenoccave.com/2013/05/08/centos-6-postfix-spf-checking/) but I'm getting the following errors in maillog: May 8 22:15:13 ip-172-31-15-65 postfix/smtpd[1999]: ...
0
votes
1answer
12 views

Local mail not signed, Postfix, DKIM, Mandrill

I am running a Postfix mail server for my client. Mail is relayed through Mandrill. Mandrill requires a valid DKIM signature. This works all right for relayed mail. That is, mail sent through ...
0
votes
1answer
43 views

Postfix NOQUEUE: reject: RCPT from unknown

I built a web based application but when it is trying to send an e-mail it fails. Postfix logs the following in it's mail.log: postfix/smtpd[22261]: warning: hostname srv.eastinc.nl does not ...
1
vote
0answers
40 views

Use postfix through a proxy. How should it be configured?

Postfix by default uses ports 25, 465 and 587. In my configuration, I enabled TLS encryption using the option smtpd_use_tls=yes in postfix's main.cf. This makes all smtp communications encrypted as ...
-1
votes
1answer
34 views

Mail server and postfix

On my work we use soft what monitor how much time you was on work and send email to each employee at midnight. But we have ~300 employers, and use public mailservers like gmail. So computer there soft ...
0
votes
1answer
39 views

Sync a Maildir backup to an account

I have a client who created about 20 mailboxes on a server, and they have been using them for a few weeks. So there is mail in them, that can't be lost. Now they recovered a backup of those mailboxes ...
1
vote
1answer
34 views

Postfix not sending email from myorigin

I want email to come from user@example.com but they are currently coming from user@mail.example.com From Postfix documentation: What domain name to use in outbound mail The myorigin ...
0
votes
1answer
20 views

Postfix: Unverified Client host rejected / SASL Logged In

Running Ubuntu, iRedMail, Mysql, Amavis, Spamassassin, Dovecot, Postfix Recently had some unauthorized usage of a postfix server internally from a malware deprecated staging server. I worked on ...
0
votes
1answer
30 views

setup posfix mail server - allow local emails (error 550 5.7.1)

I have from on website and submiting it should sens question email to support on behalf of customer (puting his email addres as sender) Problem is that support does not recieve email but insead ...
0
votes
1answer
54 views

Set PostFix relay_host only for outgoing emails

I setup an architecture with a PostFix mail server and an Encryption gateway. I am relaying all my outgoing SMTP traffic (even mails going from mydomain.com to mydomain.com) to an encryption Gateway ...
0
votes
1answer
40 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 ...