[BlueOnyx:11570] Re: Sendmail Authentication errors

[Will Nordmeyer]

> Date: Sat, 20 Oct 2012 19:43:34 -0600
> From: "David Thacker" <David at ThackerNet.com>
> Subject: [BlueOnyx:11566] Re: Sendmail Authentication errors
> To: "BlueOnyx General Mailing List" <blueonyx at mail.blueonyx.it>
> Message-ID: <DE7212B7E8B24B0B96D76983338E8415 at TNTXP>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> 	reply-type=original
> 
>> Suddenly, with no real changes by me, I've got a few users who try to
>> send mail either via outlook or their iphone and they get 'Relaying
>> denied. Proper authentication required.'
>>
>> I had them check their mail and then do a send, but it still occurs.
>>
>> In the end (because I had limited debug time) I had to put their IP in
>> access as a RELAY.
>>
>> What else could be causing this to suddenly happen?
> 
> 
> Another cause of this behaviour may be if the user's account or their IP 
> address (host) is blocked due to excessive failed logins.
> 
> Log in to the server as admin, and go to the Security > Failed Logins 
> menu. If you see those users on either the Blocked Hosts tab or the 
> Blocked Users tab, click on the "Reset all blocks" button to unblock them.
> 
> dAvid tHacker                                  Email: David at ThackerNet.com
> Thacker Network Technologies Inc.                Http://www.ThackerNet.com
> 
> 
David, 

Thanks for the thought - I'd checked and there were not host blocks or
user blocks.  I just don't see why it just started up in the past 3-4
days.