Unable to send using TLS

[heftigrat]

I am attempting to send an email using TLS and get the following error in "/var/log/mail.log":

Jan 16 12:44:36 bismarck postfix/smtpd[10117]: connect from myjob.corpserver.com[x.x.x.x]
Jan 16 12:44:37 bismarck postfix/smtpd[10117]: setting up TLS connection from myjob.corpserver.com[x.x.x.x]
Jan 16 12:44:38 bismarck postfix/smtpd[10117]: TLS connection established from myjob.corpserver.com[x.x.x.x]: TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)
Jan 16 12:44:39 bismarck postfix/smtpd[10117]: NOQUEUE: reject: RCPT from myjob.corpserver.com[x.x.x.x]: 550 <test@recipient.com>: Recipient address rejected: User unknown in local recipient table; from=<admin@mydom.dom> to=<test@recipient.com> proto=ESMTP helo=<[y.y.y.y]>
Jan 16 12:44:41 bismarck postfix/smtpd[10117]: lost connection after RCPT from myjob.corpserver.com[x.x.x.x]
Jan 16 12:44:41 bismarck postfix/smtpd[10117]: disconnect from myjob.corpserver.com[x.x.x.x]

[till]

Does this error occurs only when you send with TLS?

Is the email address test@recipient.com listed in /etc/postfix/virtusertable?

[heftigrat]

Originally Posted by till

Does this error occurs only when you send with TLS?

I assumed the answer was "yes", as I was able to send before, but I just checked and the answer as of today is apparently "no".

Originally Posted by till

Is the email address test@recipient.com listed in /etc/postfix/virtusertable?

No. Why would it need to be? That would mean that I have to add every email address in the world as my clients would undoubtedly want to send to addresses I do not already know. Just to make things clear, "test@recipient.com" is not an account on my server, it is hosted elsewhere. The account on my server is "admin@mydomain.dom" or "mydomain.dom-admin", which is definitely in "/etc/postfix/virtusertable".

In short I am sending FROM my server using account "admin@mydomain.dom" TO a remote server w/destination address "test@recipient.com".

[till]

Ok, i thought test@recipient.com was on your server.

Have you enabled SMTP authentication in your email client? In outlook it is named somtehing like "SMTP server needs authentication".

[heftigrat]

Originally Posted by till

Have you enabled SMTP authentication in your email client? In outlook it is named somtehing like "SMTP server needs authentication".

Most certainly. In Mozilla Thunderbird I have the option "Use name and password" checked, and I have filled in the "Username" field.

[till]

And you are sure that recipient.com is not listed in /etc/postfix/local-host-names ? I wonder why postfix "thinks" its a local address and dont try to resolve it

[heftigrat]

Originally Posted by till

And you are sure that recipient.com is not listed in /etc/postfix/local-host-names ? I wonder why postfix "thinks" its a local address and dont try to resolve it

WOW! ::hits head w/2x4:: um, thanks. I forgot that I created recipient.com at one point. It is NOT listed in "/etc/postfix/local-host-named", however, setting up the domain in ISPC must have changed something else, even though I never entered a web/email user/pass. I'm sorry for wasting so much of your time. I am ashamed.

[heftigrat]

hmmm....an update: I deleted "recipient.com" from ISPC, restarted the SMTP server, even flushed out the saved pw in Thunderbird and restarted T-Bird, still getting the same error. Anything else need to be purged in the config files? Thanks!

[heftigrat]

Nevermind, I forgot to empty the ISPC recycle bin. My mistake - again. Thanks anyhow guys!