Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (Ubuntu 9.10)
Hello Ubuntu Nation ...
I used the "Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (Ubuntu 9.10)" HowTo to try to correct my postfix config when it suddenly stopped working. Now, I'm not doing virtual users or quotas, but everything else is in there. Here's the rundown of where things stand:
What does work:
Incoming mail to my users is handled properly
Reading IMAP mail, either through Squirrelmail or an external client works
Sending mail out through Squirrelmail works
Note that Courier-IMAP is configured to authenticate through the MySQL DB, as is Apache for some directories.
What does not work:
Sending email through external clients times out on the connection attempt. This is configured (badly, it would seem) to authenticate to the same mysql database as Courier and Apache via saslauthd and the pam_mysql plugin.
Note that I did have this working at one time. Unfortunately, an upgrade made it go wrong (I think), and since I couldn't see the problem (I seem to have been kept in the cache longer than any of the other users) I've been sitting on this for some time.
Here's my main.cf:
I know the relayhost is empty. This is intentional, and does not seem to be causing issues with mail sent via Squirrelmail.
The problem is that when trying to connect to postfix with a mail client like Thunderbird, Apple Mail, Outlook, etc. the connection times out. Same with telnetting in to port 25. I have verified that port 25 is open in the firewall and that the port is listening. When trying to connect, I can even see the SYN_RECV state on the server, but nothing whatsoever shows in any of the logfiles.
When I telnet in to port 25 from the server, I see this:
What's the output of
netstat -tap is showing the master process listening on port 25, and there was nothing whatsoever in the mail logs. There were definitely packets coming through, but that only served to obscure the problem. I've just come across a solution that I probably should have though of before:
Turns out port 25 was being blocked by my ISP - why it was still letting some packets through, I have no idea.
I had gotten into the habit of using webmail when I changed my home ISP and didn't notice the problem until I was past the association. My other users didn't notice it at the same time because my brother was traveling and connecting through hotspots that were not blocking that port.
The fix was to uncomment the submission configuration in master.cf and open port 587 in the firewall.
Other things I had to remember:
* Open the submission port in the firewall.
* Update the Squirrelmail configuration to use the correct port.
* Set the -o smtpd_tls_security_level=may in the master.cf submission config to allow Squirrelmail to connect without TLS, as well as external clients that may not be able to use it.
* Add the following to the master.cf submission:
* And change the smtpd_client_restrictions setting to include mynetworks.
Without these changes, I'd have had to jump through hoops to get Squirrelmail to go through the SMTP authentication as well as the IMAP authentication. Didn't seem worthwhile.
So, now I'm on to the next problem. It seems the postfix - sasl - pam - mysql authentication chain is not quite right. But at least I'm actually getting useful information there. If I can't find the solution to this one, I'll post another thread.
I hope this helps someone else avoid the frustration I went through.
Cyrus and postfix
sorry if I have used the wrong thread to ask the question. but I thought it's some what related.
apparently, I have a fedora running cyrus and postifx to host several domains with similar setting with virutal users, domains with postifx, mysql and squirrelmail.
I have also a ubuntu 9.04 running ispconifg 2. I have just moved one domain say xxx.com from the fedora to ubuntu.
Now, the problem is emails sent from the fedora to the xxx.com (now docked in ubuntu). when investigating the maillog in fedora, the xxx.com email address resolve back to the fedora host name which is the old host.
how do I get it to point to the new host?
any help appreciated
It will look something like this:
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