There is nothing to worry about on your side. I received such email too.
> On Sep 3, 2016, at 5:57 PM, Jonathan Aquilina <jaquil...@eagleeyet.net> wrote: > > Can someone tell me if the below is something to worry about as I hardly post > to the list and I know when I have posted to the list my emails have not > bounced. > > > > > -------- Original Message -------- > > Subject: Warning from user@hadoop.apache.org > Date: 2016-09-04 02:36 > From: user-h...@hadoop.apache.org > To: jaquil...@eagleeyet.net > > > Hi! This is the ezmlm program. I'm managing the > user@hadoop.apache.org mailing list. > > > Messages to you from the user mailing list seem to > have been bouncing. I've attached a copy of the first bounce > message I received. > > If this message bounces too, I will send you a probe. If the probe bounces, > I will remove your address from the user mailing list, > without further notice. > > > I've kept a list of which messages from the user mailing list have > bounced from your address. > > Copies of these messages may be in the archive. > To retrieve a set of messages 123-145 (a maximum of 100 per request), > send a short message to: > <user-get.123_...@hadoop.apache.org> > > To receive a subject and author list for the last 100 or so messages, > send a short message to: > <user-in...@hadoop.apache.org> > > Here are the message numbers: > > 23009 > > --- Enclosed is a copy of the bounce message I received. > > Return-Path: <> > Received: (qmail 55605 invoked for bounce); 24 Aug 2016 13:51:02 -0000 > Date: 24 Aug 2016 13:51:02 -0000 > From: mailer-dae...@apache.org > To: user-return-230...@hadoop.apache.org > Subject: failure notice
