Last November I was "automatically removed from the 
SCIENTIFIC-LINUX-USERS list (Mailing list for Scientific Linux users 
worldwide)  as a result of repeated delivery error reports from your mail 
system."  So one possibility is that your mail system is occasionally 
failing to deliver mail to you from this list, but you haven't yet been 
removed.  In my case, the reason was that the listserver sometimes sends 
email with a header longer than 32768 bytes, which the SLAC mail system 
couldn't handle.  FermiLab said such long headers are becoming necessary 
because "cloud systems that everyone has and will be moving to, add 
additional diagnostic info in the headers so if people report any errors, 
they can more easily be diagnosed."  The solution was to convince the 
managers of SLAC's mail system to increase their incoming header size 
parameter.

Steven Yellin

On Wed, 21 Jun 2017, Bill Maidment wrote:

> Hi. Is there something wrong with this mailing list? I received this 
> response, but I never received the original message. This is not the 
> first time I have noticed this.

> Cheers
> Bill
>
>
> -----Original message-----
>> From:Stephan Wiesand <[log in to unmask]>
>> Sent: Wednesday 21st June 2017 2:58
>> To: [log in to unmask]
>> Subject: Re: Security ERRATA Important: kernel on SL6.x i386/x86_64
>>
>> Kudos to the SL team at FNAL for once again getting the updates for a really nasty issue out incredibly quickly. Impressive.
>>
>> --
>> Stephan Wiesand
>> DESY -DV-
>> Platanenenallee 6
>> 15738 Zeuthen, Germany
>>
>>
>