Free and open source mail transfer agent (MTA) that routes and delivers email

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82 views

how to send email from an instance without using sendgrid? [closed]

My project up and beta running on google compute engine. I want to set-up email server. For that i followed http://www.krizna.com/centos/setup-mail-server-in-centos-6/ I edited /etc/postfix/main.cf ...
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0answers
57 views

how to route all php script emails through postfix

I have a plesk server with 1000 domains. customers send lot of spam from scripts, which i cannot block. so i want to route their php scripts or all emails from every scripts, to be passed/routed ...
0
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2answers
131 views

CentOS 7 ec2 smtpd - Client host rejected: Access denied

I've been trying to figure this out for hours and can't quite wrap my head around it. I have a mail server on an ec2 instance running CentOS7 that has postfix, courier (authlib and imap), sasl, ...
0
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1answer
60 views

Auto forward email for mail system use Postfix + Dovecot authenticate against Active Directory

I have a mail server with postfix + dovecot lookup to Active Directory for user authenticaiton and mailbox and deliver mail to virtual mailbox (dovecot) User authentication for IMAP/POP are working ...
0
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1answer
49 views

How do I configure amavisd-new to assume all mail is not outgoing?

I am splitting up my postfix mail server into separate instances - outgoing and incoming. Both mail servers handle mail for multiple domains using a sql database and the virtual_mailbox_domain lookup. ...
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2answers
40 views

Reject Recipients address Postfix

I have a problem with postfix to reject outgoing email for some address in blacklist. This is my configure /etc/postfix/main.cf: smtpd_recipient_restrictions = check_recipient_access ...
2
votes
1answer
91 views

postfix-mysql package on CentOS 7

I'm following this tutorial on how to install a secure mail server. The guide is for Ubuntu 14.04LTS but I'm doing it with a few modifications for my CentOS 7 system. I am however stuck on ...
0
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1answer
56 views

Remove OR Replace “mailed by” field with DKIM & SPF enabled

Is it possible to remove the mailed by: us-west-2.amazonses.com field in an email or replace it with mailed by: example.com? Amazon forums, this site, and google searches are very unclear. I am using ...
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2answers
101 views

Setup Postfix+Dovecot reading from database

I'm trying to setup Postfix and Dovecot, the latter with virtual users stored in a MySQL database, following this guide (but here I recap everything as there are some "bugs" in the guide I fixed ...
3
votes
1answer
30 views

Postfix - virtual - exclude sender from recipients

Is postfix able to rewrite the recipients, based on the sender address? There are multiple users receiving Mail by this configuration in /etc/postfix/virtual: mail@example.com user1, user2, ...
0
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1answer
89 views

BATV filtering on Postfix and mailman

Apparently Postfix does not natively support BATV tags. We'd like to strip these prvs=-tags from the FROM field because we think our mailman setup has issues with it (sees sender as a non-member). I ...
3
votes
1answer
297 views

Does closed Port 25 cause mail to be marked as spam?

I have a web server where I have installed Postfix for sending emails only. All incoming mails will be handled by google apps and not my web server. Using iptables rules, I have blocked all incoming ...
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2answers
85 views

Postfix login mismatch sender address rejected

I'm getting the following rather annoying error message: Sender address rejected: not owned by user subscription@****.ca; from=<subscription@****.ca> to=<webmaster@****.ca> proto=ESMTP ...
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votes
2answers
44 views

postfix problems with pattern in virtual file

We are trying to forward all emails to a specific email address. I think everything is set up okay, such as 'main.cf' and 'virtual-regexp' files. If we put the following in the 'virtual' file, the ...
1
vote
1answer
79 views

Postfix - Allow delivery for my domain but block mail to root@localhost for all but local system

I use Postfix as an MTA to receive mail for my domain. Recently I've started to get some mails coming in to root@localhost from external IPs trying to exploit bash. My bash is patched so I should be ...
1
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1answer
93 views

Milter service needs transport:endpoint instead of “/var/run/opendkim/opendkim.sock”

I have set postfix with milter based on this tutorial: https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-dkim-with-postfix-on-debian-wheezy But then posptfix reported that ...
1
vote
1answer
60 views

Relase outgoing mails to internet if local delivery failes

How can I release outgoing mail to the internet if local delivery fails in postfix? My server has virtual domains configured with mydomain.tld. When I send an email to somename@mydomain.tld it try to ...
2
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1answer
60 views

Postfix SMTP server gets “550 Requested mail action not taken: Invalid IP”

I have a SMTP server named smtp-ca.mdpi.com and when sending emails to some specific chinese email domains, I am getting back: 550 Requested mail action not taken: Invalid IP<64.15.147.140> (in ...
0
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1answer
222 views

Fail2ban MTA=Postfix Setting in Jail Config giving Error

In /etc/fail2ban/jail.local, when I have the MTA setting to Postfix, Fail2Ban is showing an error and is unable to start. [DEFAULT] ignoreip = 127.0.0.1/8 bantime = 1800 ...
0
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1answer
38 views

Change location of maildir

Standard Linux installation provide a maildir in /var/spool/mail/$user (that's actually a single file holding all emails, not a "mail directory"), soft-linked by /var/mail/. I'm going to set up ...
1
vote
1answer
79 views

Postfix 'tlsv1 alert unknown ca'

I have VPS (server A) and hosting (server B). On the server A, I've set up mail server (debian, postfix, dovecot, postfixadmin and roundcube, self-signed cert, TLS only auth) which works fine: I can ...
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2answers
89 views

Postfix/Dovecot Issues receiving Mail

I am having an issue with PostFix and Dovecot. I followed this guide: https://github.com/opensolutions/ViMbAdmin/wiki/Mail-System-Install-on-Ubuntu and when mail is sent into the server, this is in ...
1
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2answers
47 views

Postfix and access restrictions for unknown clients

I'm trying to configure a postfix mailserver and I have a doubt related to parameters like smtpd_reject_unlisted_sender and that sort of things. Of course, I would like to configure my server in such ...
2
votes
3answers
128 views

Postfix + Php Mail() VS Postfix + SMTP

Most CMS (Joomla for example) comes with php mail() as default and has the option of changing it to SMTP if we want. I will be setting up both the webserver and mail server (Postfix) in the same VPS ...
0
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1answer
62 views

postfix relay emails dynamically

Is it possible to relay incoming emails dynamically with postfix's relayhost? relayhost = proxy:mysql:/etc/postfix/email2server.cf and I used mysql database to query each email with relay host. But ...
1
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1answer
172 views

Why is OpenDKIM not signing and verifying my emails? (CentOS 6.5, Postfix & OpenDKIM)

I'm running: CentOS 6.5 Postfix 2.6.6 opendkim: OpenDKIM Filter v2.9.0 Compiled with OpenSSL 1.0.1e-fips 11 Feb 2013 SMFI_VERSION 0x1000001 libmilter version 1.0.1 Supported signing ...
1
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1answer
58 views

Postfix and “local mail”

That's the first time I'll configure a mail server. I explain you the complete picture. Currently, my company company.com has an ...
1
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1answer
170 views

Rewrite or change MAIL FROM:<> with postfix or mailman

I've got a problem with laposte.net free french email provider : since several weeks now, their smtp servers don't accept empty MAIL FROM anymore. Here is a sample telnet session : $ telnet ...
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2answers
61 views

Why does postfix on AWS give me “Invalid MAIL FROM address provided”? I have production access

I'm running the postfix mail server on my AWS box. My domain is mydomain.com. I have set up virtual mapping such that emails sent myuser@mydomain.com should be forwarded to target-user@gmail.com.com. ...
0
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1answer
236 views

Postfix - Relay all incoming mail to another host

I have 2 hosts, one is mail1.example.com The other is mail2.example.com Both servers have it own public ipv4 ips (But in different geo locations) Domain name has mail1 MX as mail server. I ...
1
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1answer
51 views

How to move properly from Postfix/Dovecot to Google Apps

here is the situation: we had a mail server configured within a VPS (using Postfix/Dovecot) with the mail for 1 domain being managed. We just moved the mail for that domain to Google Apps. The MX ...
1
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1answer
64 views

postfix disable blacklist checking for registered user

Many users has dynamic IP and sufficient number of these IP is blacklisted. How to disable check Postfix blacklist only for registered user? I want only block incoming mail from blacklisted IPS only. ...
0
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1answer
49 views

Which difference between /etc/aliases and virtual_alias_maps in Postfix?

Which difference between /etc/aliases and virtual_alias_maps in Postfix and where should I put aliases from local accounts to virtual user accounts (i.e. from root to postmaster@example.com)?
0
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1answer
41 views

Make Postfix accept all login credentials

I have setup a Postfix as a relay for an embedded device with a severely broken STMP implementation. Therefore I need to make Postfix to have AUTH enabled and to accept ANY combination of username and ...
0
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1answer
124 views

openssl s_client shows TLS working on ports 993,465, but mail clients time out on connection attempts

With the recent scares over POODLE, we have begun the process of changing everyone's connections to TLS, instead of SSL... While this process went smoothly for HTTPS, it seems that Dovecot & ...
1
vote
1answer
40 views

Clamav milter forward a copy of infected emails

I have a working postfix + clamav installation. How can I configure this to not just quarantene infected emails but if this happens also send a copy of the email to the sysadmins address? What I ...
0
votes
2answers
216 views

Scalable Multi Server E-mail setup using Linux/Dovecot

One of my clients ask me to set-up a multi server, scalable email system. I can configure multiple servers to send emails. By using PHP Mysql based login script, users will be redirected to each ...
1
vote
1answer
268 views

postfix/smtpd[1337]: warning: hostname example.com does not resolve to address 93.184.216.119

I am having trouble figureing out what exactly the following error message means. It pops up in the logs whenever a mailserver from 192.168.x.x address is pushing mails. postfix/smtpd[1337]: ...
3
votes
2answers
106 views

Postfix - forward rejected by unknown recepients emails to SPAM-learning mailbox

I have Postfix + BitDefender FRAMS running as hygiene gateway before few Exchanges. BD FRAMS can learn it's Baesian filter by download SPAM and HAM emails from dedicated mailboxes. Because we have ...
1
vote
1answer
59 views

Postfix to Postfix relaying

I've got a (possibly unusual) situation with using Postfix to relay mail to another Postfix mail server that then needs to send the email out. I've read plenty of tutorials and seen instructions for ...
0
votes
1answer
99 views

Postfix illegal address syntax

My postfix install is set up to forward all email going to example.com to my other mail server at mail.example.net. This works fine for all addresses except !@example.com -- the example.com server ...
0
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2answers
24 views

Postfix - mynetworks listing options

I am setting up Postfix to relay mail for our internal devices that do not support authentication. We will have a number of devices. Is there an easier way to list out devices vs. just listing them ...
2
votes
1answer
66 views

Continuously monitor the postfix Mailqueue (real time)

Is there a command to look at the Mailqueue of Postfix in real time. I know of the commands, postqueue -p and mailq. What I am looking for is real time monitoring of the queue. Similar to when i ...
0
votes
1answer
428 views

Postfix - receiving many “Undelivered Mail Returned to Sender”

I once set up my server using this guide (or a very similar one) But from time to time I have days or weeks of flooding "Undelivered Mail Returned to Sender" to my inbox. Oh and I am using catch-all ...
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2answers
39 views

How to remove Postfix queue messages sent to a specific domain

I have a server with multiple domains. How can I clear all Postfix queue messages for a specific domain?
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2answers
202 views

Why can't I send/receive emails from AWS Ubuntu using Postfix?

I'm trying to send/receive emails on my AWS Ubuntu box. To do so, I'm following the instructions posted by Amazon here. (I skipped the section entitled "To configure integration using a secure ...
2
votes
2answers
113 views

can I add global alias in virtual_alias_maps but only for local domains?

I want to create a global alias for all my domains to catch all mail to addresses like postmaster@ I've added theses lines to aliases.pcre: /(MAILER-DAEMON|postmaster|abuse|webmaster)@(.*)$/ ...
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votes
1answer
429 views

`Sender address rejected: not owned by user` in Postfix

I am getting the following error when I try to send an email from a client on my home computer through my authenticated SMTP server, to receiver@gmail.com. Oct 17 09:21:40 debian postfix/smtpd[1643]: ...
2
votes
1answer
61 views

Mail has stopped working on Centos since instlling MailScanner

I have a VPS which I rent and it is running Centos 6. The VPS has ZPanel installed which is used to host some websites and emails. I have just installed Mailscanner and now, I have noticed that ...
0
votes
1answer
38 views

Sending mail with Postfix from multiple domains on the same server

I have a dedicated server with multiple Ruby on Rails apps on it. Each of these apps run on their own domain. When configuring Postfix there are parameters called "myhostname" and "mydomain". As far ...