Teknoratti
Technical User
I'm trying to figure out the root cause of an issue we just started receiving from our users from our outlook web stating that emails sent to hotmail / msn emails are getting bounced back with the following: 550 Requested action not taken: mailbox unavailable
According to our users, the email addresses are known good emails, as they can send emails from other emails, i.e, gmail -> hotmail, hotmail -> hotmail, yahoo -> hotmail.
Even if a known good hotmail / msn email is sent to our users and they even try to REPLY to the message that was sent to them it gets bounced back.
Strangely enough it is our internal mail server generating the bounceback with the following:
Generating server: OurMailServer.domain.com
<email name>@hotmail.com
Requested #550 Requested action not taken: mailbox unavailable ##
Original message headers:
Received: from OurMailServer.domain.com ([10.x.x.x]) by
OurMailServer ([10.x.x.x]) with mapi; Wed, 18 Dec 2013 17:40:05 -0500
From: "<name>" <name@domain.org>
To: "<name>" <name@hotmail.com>
Date: Wed, 18 Dec 2013 17:39:56 -0500
Subject: RE: test
Thread-Topic: test
Thread-Index: Ac78QgdKIPlWqboXSNab2Tu5E5166AAAAx3+
Message-ID: <58FA4ACA520A5641941D10DC38408D5C634E08ADDB@ASO00-EXCHBES-1>
References: <BLU180-W31F4AAA25929F173266334DCDA0@phx.gbl>
In-Reply-To: <BLU180-W31F4AAA25929F173266334DCDA0@phx.gbl>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
acceptlanguage: en-US
Content-Type: multipart/alternative;
boundary="_000_58FA4ACA520A5641941D10DC38408D5C634E08ADDBASO00EXCHBES1_"
MIME-Version: 1.0
I've read other forums and researched a bit, some are saying the bounce backs are because the emails are not active and / or the email address doesn't exist, but clearly they are because emails are being sent to us from those addresses, and I even tested with my own personal hotmail accout which I know to be good.
Any help on which way to start my search would be helpful.
According to our users, the email addresses are known good emails, as they can send emails from other emails, i.e, gmail -> hotmail, hotmail -> hotmail, yahoo -> hotmail.
Even if a known good hotmail / msn email is sent to our users and they even try to REPLY to the message that was sent to them it gets bounced back.
Strangely enough it is our internal mail server generating the bounceback with the following:
Generating server: OurMailServer.domain.com
<email name>@hotmail.com
Requested #550 Requested action not taken: mailbox unavailable ##
Original message headers:
Received: from OurMailServer.domain.com ([10.x.x.x]) by
OurMailServer ([10.x.x.x]) with mapi; Wed, 18 Dec 2013 17:40:05 -0500
From: "<name>" <name@domain.org>
To: "<name>" <name@hotmail.com>
Date: Wed, 18 Dec 2013 17:39:56 -0500
Subject: RE: test
Thread-Topic: test
Thread-Index: Ac78QgdKIPlWqboXSNab2Tu5E5166AAAAx3+
Message-ID: <58FA4ACA520A5641941D10DC38408D5C634E08ADDB@ASO00-EXCHBES-1>
References: <BLU180-W31F4AAA25929F173266334DCDA0@phx.gbl>
In-Reply-To: <BLU180-W31F4AAA25929F173266334DCDA0@phx.gbl>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
acceptlanguage: en-US
Content-Type: multipart/alternative;
boundary="_000_58FA4ACA520A5641941D10DC38408D5C634E08ADDBASO00EXCHBES1_"
MIME-Version: 1.0
I've read other forums and researched a bit, some are saying the bounce backs are because the emails are not active and / or the email address doesn't exist, but clearly they are because emails are being sent to us from those addresses, and I even tested with my own personal hotmail accout which I know to be good.
Any help on which way to start my search would be helpful.