Postfix + Courier IMAP local email problems
rg.lists at rzweb.com
Sat Apr 14 01:48:26 UTC 2012
On 12.04.2012 13:54, Robert Bonomi wrote:
>> From owner-freebsd-questions at freebsd.org Thu Apr 12 15:09:43 2012
>> Date: Thu, 12 Apr 2012 13:01:10 -0700
>> From: Ron <rg.lists at rzweb.com>
>> To: <freebsd-questions at freebsd.org>
>> Subject: Postfix + Courier IMAP local email problems
>> I'm having a couple of issues with postfix and courier-imap on my
>> machine and I'm trying to figure out what is different from my old
>> machine. I've checked every config file I think of and they both
>> to be set up the same.
>> Here are the two issues:
>> If I send email from a local user (while SSH'd in using the command
>> line mail) to another local user (mail todd at mysite.com) on the same
>> machine, but using the full email address, I get the following error
>> the email bounced back:
>> 553 5.3.5 mail.mysite.com. config error: mail loops back to me (MX
>> 554 5.3.5 Local configuration error
> this is a 'well known' problem.
>> The only thing I can think of is that mysite.com and mail.mysite.com
>> (the mx record) do not point to the same server (which they did on
>> old machine).
> it's not that sample. <grin>
>> I have also tried everything I can think of in how
>> are listed in postfix's virtual file and in /etc/aliases and server
>> entries in main.cf.
> The problem is that the 'local' machine DOES NOT KNOW that it is
> to accept mail for the domain specified in the email addressz.
> The server looks at the address, determines that it is *NOT* local,
> by whatever means 'postfix' uses to make that determination (it's the
> 'w' class in Sendmail), and goes off to query DNS for the MX for the
> 'remote' machine to send mail to. DNS returns "this" (the one asking
> the 'remote' machine name) machine as the destination to deliver to.
> the local server =knows= that is incorrect, because it is not the
> point for that domain. hence the error message, and 'return to
> as undeliverable.
> This _is_ a configuration error in (probably) the local mailserver,
> or in
> the way the local hostname/domainname are set up..
>> The second issue is if (again, SSH'd in an using mail) I send email
>> a local user without the @mysite.com (mail todd) then the email
>> available via IMAP externally. I can read it using the command line
>> mail, but not externally via IMAP. These two mailboxs are
>> separate and have two different lists of waiting email.
> This is an 'inconsistency' in the way 'locally' generated mail is
> handled, and the way externally generated mail is being handled.
> *PROBABLY* because -one- mail server program is being started at boot
> time, and a _different_ program is being invoked when somebody sends
> locally from the command-line.
> Chasing this down can be a b*tch. "Everything and it's cousins" has
> executable name 'sendmail' hard-coded into it for sending outgoing
> Sometimes the original 'sendmail' is replaced by a different
> 'of the same name', that is really 'postfix', 'exim', 'qmail', or the
> dreaded 'something else'. Sometimes 'sendmail' is a "switching"
> that determings -- by some arbitrary means (typically a configurtion
> stored 'somewhere')-- _which_ of many alternatives to call.
> Now _if_ the mailer started at boot time is *explicitly* named as
> _other_ than "sendmail", and is -not- what you get when you invoke
> the name
> 'sendmail', you have "obvious" potential for dissimilar behavior.
> is _probably_ what is going on in your case. "Local" command-line
> is being delivered to an 'mbox' type mailbox, while 'remote' mail is
> being delivered to 'something different' -- I think recent versios of
> IMAP use a database-type struture rather than a simple 'mbox'.
>> Everything works fine if I send email from a remote client
>> (Thunderbird, Mail.app) and read the email with a remote client via
>> IMAP. It's just the local email sending that seems to be broken.
>> like to get one of these two problems fixed so root can email me
>> log files, which it can't do right now or I can't read via IMAP
>> they are't going to the right mailbox.
>> Is there some simple I'm just messing up?
> "Yes." <grin>
> The difficulty comes in identifying _which_ "simple thing" it is that
> messed up.
OK, I found the problem. It was the hostname not being set correctly.
What threw me was that it was correct in the rc.conf file, but I did not
know you needed to reboot the machine to have it take effect. It just
never occurred to me to run 'hostname' and see since I was seeing it
correctly in the rc.conf.
Thanks for the help.
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