Oh boy. My first server was Exim, very long time ago, all I remember is it was real easy to set up. Then I started using Sendmail and it didin't take long to get it going. Postfix must be a monster ...

Postfix is (IMHO) much easier to get to grips with than Exim, and an order of magnitude less obtuse than Sendmail.

But the biggest hurdle to overcome when setting up ANY mail server is the requisite knowledge of the underlying protocols and processes - no 'cut & paste' tutorial can teach that.

Postfix has a ton of different configuration options. SASL makes it more complicated too. + Spamassasin, forget it. I used to host my own email + DNS using on Debian with dnsmasq (caching spam address look ups), postfix, dovecot, spamassasin (hooked into SpamHaus DBL), and anti-virus with clamav. It was a little project that turned into something I did for quite a while. I ended up yielding and moving my domain to google apps since I have a google apps account for beta testers that gives me pretty much every google service available and unavailable.

Here are some of the links I have archived from my email server project. I realize that none of these sites document how to do these tasks on Slackware. It is all transferable to Slackware though if you take into account the difference between distributions of Linux.

• Postfix Email with Dovecot
• Postfix service restrictions
• Postfix Mailhub Security & SPAM Filtering
• Fighting Spam with SpamAssassin and Postfix
• Caching Nameserver with DNSMasq
• Postfix DNS Support
• Spam Assassin set up on Debian
• How to train Spam Assassin
• How to install Spam Assasin on Ubuntu 12.04
• Enabling SpamHaus DBL for Spam Assassin
• OpenSSL Command Line Cookbook
• Creating a Certificate Authority and signing SSL certificates

Coming to a close with my attempts... Apparently I am not ready for this.

Unless something new pops up I want to thank everyone for their help and the links.... I will continue to read about all of this but my efforts currently are no more.

One last comment;

/var/log/messages mention nothing past my initial login as well as /var/log/syslog

BUT

/var/log/maillog mentions this;

Well I have tried many different combinations of things.

postfix and sasldauth bot load without error either in visible error or in /var/log*.

I have the user and password verified.

These are the only errors I get;

/var/log/syslog;

Nothing to do with Postfix.. Last entry was reboot message.

/var/log/messages;

Nov 17 12:17:48 linux1 saslauthd[1002]: detach_tty : master pid is: 1002
Nov 17 12:17:48 linux1 saslauthd[1002]: ipc_init : listening on socket: /var/state/saslauthd/mux

/var/log/maillog;

Nov 17 12:17:57 linux1 postfix/postfix-script[1077]: starting the Postfix mail system
Nov 17 12:17:57 linux1 postfix/master[1079]: daemon started -- version 2.11.7, configuration /etc/postfix
Nov 17 12:19:09 linux1 postfix/smtpd[1086]: connect from HouseOfM.domain[192.168.0.2]
Nov 17 12:19:42 linux1 postfix/smtpd[1086]: warning: SASL authentication failure: Requested identity not authenticated identity
Nov 17 12:19:42 linux1 postfix/smtpd[1086]: warning: HouseOfM.domain[192.168.0.2]: SASL PLAIN authentication failed: authentication failure

Try adding a new system user, start that portion of the tutorial again. Generate the password for the auth string based on that user's system password and user name. Are you sure postfix / sasl are configured to expect plain auth strings? The only other thing I can assume is that something with postfix has changed since that tutorial was written due to new version features and you are using the wrong configuration settings (deprecated).

I will get back to what you mentioned specifically but I am confused about this;

I get where it says -g postfix (initial group postfix) but whats the second postfix for?

Also I am unsure of what he means by;

That command is at it should be. You can investigate why by running "man adduser"

Add the postfix user and the cyrus user to the "mail" group. I googled for a beginner tutorial for you, here it is.

Good Morning;

I have had numerous failings in trying to set up Cyrus/Postfix.. And though I am not giving up on that combination, I am going to attempt a Dovecot/Postfix.

From what I gather I have both Dovecot and Postfix installed correctly but at this point probably not configured correctly, or at least, fully...And I am not disillusioned to believe I am anywhere near that. But...Based on what I gather I should be far enough into this to be able to telnet into myself on either port 110 or 143 from with my network or on the box itself.
I seem to get this;

or

I can telnet Port 25 and also my specific port from outside so I know connections are open.

When I try and verify dovecot being loaded, I get this;

Which means it is indeed loaded from what I gather.

Also I verify my dovecot accepts and sees the user/pass I made;

And I get verified results.

So I verify open ports and what not get get this;

Postfix is indeed isntalled and is running, BUT not configured at this point beyond associating with dovecot as SASL.

I would assume at this point though that this is a Port issue and not necessarily a docevot issue? I am not understanding why it gets an automatic refusal/disconnect when the ports are indeed up and "Listening".

Also, the only messages on either in /var/log/* is this;

All good thus far.

Ok so here we have it. My Postfix/Dovecot seem to be working well enough..

I can log in both on localhost AND my iPhone and "check/read" email but I can not seem to "Send" it...

I get this error on my /var/log/maillog;

My iPhone has this message;

I have really put a lot of effort into this and read instead of ask questions but I am indeed stumped here.. But I did make great progress!

http://www.postfix.org/SASL_README.html

Since you are using Dovecot, follow the instructions to use it for sasl auth in postfix too.

This was indeed covered in my Dovecot resource by Peer Heinlein that I have been reading.... I must be missing something else.

Have you set your phone to authenticate?

Well it is an iPhone and what I did was;

Under Mail, I added new account. I put in l/p and it does indeed log in as I can check the Inbox as well as receive emails. Under SMTP I have my smtp.domain.org but I do not have SSL Enabled ... I also tried lmtp.domain.org as I had set something with that prior...

It is using Port 25 for smtp server...

I just get this blah.blah.com was rejected by the server.