Download your favorite Linux distribution at LQ ISO.
Go Back > Forums > Linux Forums > Linux - Software
User Name
Linux - Software This forum is for Software issues.
Having a problem installing a new program? Want to know which application is best for the job? Post your question in this forum.


  Search this Thread
Old 06-01-2005, 09:14 AM   #1
LQ Newbie
Registered: Dec 2004
Posts: 10

Rep: Reputation: 0
POP3, IMAP and sendmail issues

Hey there.

I have configured sendmail and have running the standard POP3 and IMAP daemons that came with RH9.

When I do a telnet from a remote machine I get this:

telnet 25
Connected to
Escape character is '^]'.
220 ESMTP Sendmail 8.12.8/8.12.8; Tue, 31 May 2005 12:59:22 +0800

Then I type:

250 Hello [], pleased to meet you
250 2.1.0 Sender ok
250 2.1.5 Recipient ok
354 Enter mail, end with "." on a line by itself
Subject: Test Message
Testing Sendmail Interactively
250 2.0.0 j4V4xML9003720 Message accepted for delivery

The problem is I cannot send an email or check email from a remote machine with an address in "" with a client like outlook or Apple Mail.

I get the message : 5.0.0 Access denied.

Any help would be appreciated.


Old 06-01-2005, 09:56 AM   #2
LQ Guru
Registered: Jan 2001
Posts: 24,149

Rep: Reputation: 261Reputation: 261Reputation: 261
Access denied usually means bad authentication. If your just telnetting into your smtp server and then simply trying to send an email without authenticating yourself, that's good that it denies you so it prevents anyone (spammers inparticular) from using your server to send emails out. More or better details of course always helps us determine your problem.
Old 06-04-2005, 12:22 AM   #3
LQ Newbie
Registered: Dec 2004
Posts: 10

Original Poster
Rep: Reputation: 0
Perhaps you don't quite understand what I am saying. I am trying to check and send mail from a remote machine (same network) with an address in the same range as the server. The account details in the mail client are for the same domain as the server. The account is already created on the server. the name of the server is and the mail account is (ie. same domain).

So why do I get access denied if the account is in/on the same domain/server as the server? I would expect access is denied if the account details in the client are for As it is a different domain altogether, but not an account in the same domain.

Is that clear?

Old 06-04-2005, 01:59 AM   #4
Senior Member
Registered: May 2005
Distribution: Ubuntu with IceWM
Posts: 1,775

Rep: Reputation: 86
It's still bad authentication, whether you're telnetting or using some kind of email client (KMail, Thunderbird, Evolution, etc.). Your "" (whatever that is--why the secrecy?) doesn't have any IMAP/POP3 documentation?


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Sendmail POP3 Issues (SW 10.2) gmgartner Slackware 1 11-01-2005 08:13 PM
pop3/imap client? Thinking Linux - Networking 2 05-06-2005 12:30 PM
Sendmail IMAP issues cyberpuerka Linux - Software 6 11-05-2004 03:07 PM
Question on Imap and Pop3 cojo Linux - Software 2 06-17-2003 10:51 AM
IMP, IMAP, POP3, what do I need... ? ifm Linux - Software 2 08-02-2002 11:24 AM > Forums > Linux Forums > Linux - Software

All times are GMT -5. The time now is 04:14 AM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Open Source Consulting | Domain Registration