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Questions tagged [postfix]

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` (non-default content of main.cf) and `postconf -M` (content of master.cf)

Postfix is a mail transfer agent (MTA) that supports IPv6, DNSBL, SMTP AUTH (SASL), TLS and various database backend.

Postfix was written by Wietse Venema in 1997 and first released in December 1998 as IBM Secure Mailer.

It was designed to be highly secure and configurable, and is a drop-in replacement for , with much simpler configuration syntax.

The software was also formerly known as VMailer.

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Postfix from address changed, mail being bounced

I have an Apache server which has been happily sending emails for the past few years - earlier this week the from address on all emails sent by postifx has changed and, as a result, 99% of messages are getting bounced or marked as spam. I am not…
bhttoan
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Postfix (virtual users) + dovecot + sieve: envelop does not contain original recipient

I have set up my email server following the ISPMail tutorial with virtual users in postfix + dovecot + sieve. My problem is: the envelop "variable" in sieve does not contain the original recipient. I have a mail account, let's call it…
Artemis
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Fetch new Mails (Also from Subfolders) from another IMAP server as new Mail in Postfix

everyone. I have installed Postfix on a server with Aliases and Domains from a MySQL Database. It is configured to forward some adresses to other Mail Accounts and also delivers some mails in local mailboxes that will be queried over a dovecot imap…
Tobi
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Postfix header_checks syntax (POSIX - Perl)

I am using header_checks in Postfix to rewrite my headers (for emails sent by Outlook through my server). Here is the part of the header I am trying to change : Received: from Raphasus (****.abo.wanadoo.fr [***.***.***.109]) by mail.********.com…
Raphael Laurent
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How to setup Postfix with Opendkim to automatically sign PHP emails?

I've found that: submitted emails are signed properly (ie those sent with MUA's like Outlook and Thunderbird) command-line sent emails are signed properly emails sent with PHP, in particular case PHPMailer (non-smtp submitted, ordinary PHP…
Miloš Đakonović
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Postfix: validate recipients on remote server

I'm using transport table to specif the nexthop for specific domain: Host A: /etc/postfix/transport domain.com smtp:[mail.host2.com]:25 Host A verifies local recipients with lookup table: local_recipient_maps = proxy:unix:passwd.byname…
HTF
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Reverse proxy for mailserver (SMTP + HTTP for web client)

I'm looking at doing some reverse proxy work for a mail server with corresponding web client. Both servers are running on the same machine, this is not a server with a high load. :) The solution I've discussed with friends is having the mail…
gaqzi
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(Postfix + Dovecot) All emails to @aol.com being deferred

I'm running a dovecot/postfix mail server on debian and am having some issues. Everything is working fine except all emails to @aol.com are being deferred. The error code gave me: "The Reverse DNS lookup for your IP address is failing." I'm running…
Jonny07
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Postfix 5.7.1 Unable to relay [deliver internal mail directly]

I have the following scenario: serverA = RHEL5 using Sendmail serverB = RHEL6 using Postfix serverC = RHEL6 using Postfix gwsmtp = relayhost example.com = domain name As we are migrating from sendmail to postfix we get some unable to relay…
Chris
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Spammer spoofed localhost? Or server fail? How do I secure against this?

I noticed a spammer got through postgrey AND SpamAssassin, which was very strange. I examined /var/log/mail.log and saw some suspect lines: Log below, or on Pastebin: http://pastebin.com/k7sKnvGE Jul 19 07:59:06 mail postfix/smtpd[15492]: connect…
CaptSaltyJack
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Postfix Active Queue vs qshape

I have been looking in vain, in Postfix documentation and otherwise, to understand the difference in output between the mailq command and qshape. (The underlying problem is slow mail delivery.) Counting the mails in the mail queue (output of mailq…
nepdev
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use two different configs in one postfix, is it possible?

I'm wondering if is it possible to specify another main.cf for the configuration of smptd service in another port paired with normal config in standard port. I know that is it possible to override main.cf settings in master.cf using the -o…
theist
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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 while. I do get a bunch of emails through, but…
SteffenNielsen
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Is this backscatter?

I noticed a mail is hanging in the mailq, so my question is if that is backscatter. The mail in question: Jul 1 10:38:48 a1a postfix/qmgr[30971]: F2C95230470: from=,size=125817, nrcpt=1 (queue active) Jul 1 10:38:53…
user345234674567
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Postfix: mails sent through sendmail binary are blocked because of wrong HELO

My server is using Centos 6.5 I updated from Plesk 11.5 to 12 last week and postfix to 2.8.17. Since then, all mails sent using the sendmail binary (notifications, mail forwards...) are being rejected with a wrong HELO hostname: localhost. It seems…
curuba
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