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)

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gsuite fail to authenticate postfix

I have a ubuntu 18.04 running postfix to deliver mail with gsuite smtp. I configured postfix following this guide and followed all the steps to create a password specific for the postfix app. I tried ...
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23 views

Postfix/Gmail smtp relay invalid credentials for relay

I have a centos7 vm running a postfix using gsuite SMTP relay without authentication on port 587. I am able to successfully send email from the server itself. When I try to send email using a client, ...
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SpamAssassin doesn't flag any e-mails; no spam headers in e-mail

We use Amavis between Postfix and Spamassassin. Emails that contain GTUBE pass clean through Amavis even though they should be marked with their corresponding headers. Sep 24 20:11:09 mail amavis[955]:...
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roundcube: “Authentication failure: STARTTLS failed” when trying to send mail

I'm trying to get a roundcube/dovecot/postfix on a debian box on amazon running. I can log in and receive emails, but I cannot send. I get an error in roundcube, smtp authentication error (220) ...
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18 views

mail server receiving email from remote telnet session but not from gmail

I successfully sent mail via telnet port 25 from my local machine to my remote server running postfix/dovecot. The email successfully landed in the user's mailbox on the machine. However, when trying ...
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34 views

Postfix: don't catch outgoing email addresses via virtual.pcre

I run a Postfix server that handles several domains, and a handful of users on each domain, and I am using virtual.pcre to allow various useful aliases (for example, /user-.*@ myuser to deliver email ...
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24 views

Phishing mail was sent over my Postfix Server

within my network I have a Linux Server configured with Fetchmaill to retrieve Mails via POP3 from my Mail Provider. It is connected via postfix to an old Windows Server. Clients are connected via ...
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23 views

Dovecot+Postfix: dovecot-lmtp does not do anything

I've been trying to fix this incoming mail issue all week. I've tried so many things and have hit one roadblock after the other. I have also followed the documentation/walkthroughs to a T and I've ...
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29 views

Loadbalancing outgoing mails using multiple postfix servers

i'm looking for a solution to loadbalance outgoing mails using multiple postfix servers . The reason is to send 40000 mails per day Is there some one who tried to impliment this architecture ? Thanks
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44 views

How do I backup email messages in Dovecot? Where are they located in the file system?

I run Postfix with Dovecot. Now I need to begin to backup email messages. What directories should I backup? Such that later, if a server breaks down, I'll be able to restore all the email message on a ...
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18 views

OpenDKIM truncates email body when signing

I am using OpenDKIM with Postfix on a Centos 7 server. I was sending plain text emails earlier and they were all passed dkim-check test in Gmail. However when i started sending my mails in html form. ...
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65 views

Forward SMTP trafic through OpenVPN

Hi guys I need your help with the follwing topic: I want to run a mail server at home. Therefore I have established an OpenVPN connection between my home network (Site A) and my VPS(Site B), which ...
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23 views

SpamAssassin behaves the same for all emails

I have a mail server for my domain to handle my own emails (Postfix, Dovecot, Spamassassin - spamassassin-milter). Of course all emails are scanned by SA regardless of where they come from: another ...
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24 views

How to find a reason why a email is marked 3.5 BAYES_99 BODY

This was discussed before but somehow nowhere is no satisfactory conclusion or solution to this as of now. I am trying to find out why my messages getting marked in http://isnotspam.com with a 3.5 ...
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Postfix + Spambrella filtering

I've set up a Postfix + Dovecot & MySQL server which is to serve email for two domains, each with a static IP. I have working SSL certificates for each domain, and they are installed correctly, ...

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