550 permanent failure

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Hi All,

Having issues with trying to send email to specific users (was working). Getting the below bounce back message;

From: Microsoft Outlook
Sent: 27 November 2018 08:30
To:
Subject: Undeliverable: FW: Facebook Marketing - Confirmation

mx2.eu-west-2a.ess.aws.cudaops.com rejected your message to the following e-mail addresses:
user (user@domain.co.uk)
mx2.eu-west-2a.ess.aws.cudaops.com gave this error:
permanent failure for one or more recipients (user@domain.co.uk:blocked)
A problem occurred during the delivery of this message to this e-mail address. Try sending this message again. If the problem continues, please contact your helpdesk.

Diagnostic information for administrators:
Generating server: Exchange Server
user@domain.co.uk
mx2.eu-west-2a.ess.aws.cudaops.com #550 permanent failure for one or more recipients (user@domain.co.uk:blocked) ##
Original message headers:
Received: from Exchange Server ([fe80::7c00:eed8:cd34:3b5d])
by exchange server ([::1]) with mapi id 14.03.0415.000;
Tue, 27 Nov 2018 08:29:18 +0000
From: User user@domain.co.uk
To: User user@domain.co.uk
Subject: FW: Facebook Marketing - Confirmation
Thread-Topic: Facebook Marketing - Confirmation
Thread-Index: AdRp6Mk4U0s0feANS0qqMTbxChg8QwAL7knQACSZ9eAAC3gz4AADKrMwAAC1KcAAAIEtMAMhXh4wAAArGPAA/8RxMAAAEeVwAAAgTHACiVAb0AACPkiQACMmB2A=
Date: Tue, 27 Nov 2018 08:29:16 +0000
Message-ID: A905D4499A176E49B43CF87253F1A9C6D888B47F@ExchangeServer

Accept-Language: en-GB, en-US
Content-Language: en-US
X-MS-Has-Attach: yes
X-MS-TNEF-Correlator:
x-originating-ip: [192.168.0.133]
Content-Type: multipart/related;
boundary="021_A905D4499A176E49B43CF87253F1A9C6D888B47F";
type="multipart/alternative"
MIME-Version: 1.0

@waqkas-ahmed said in 550 permanent failure:

#550 permanent failure for one or more recipients

2 possibilities here:

• One is a recipient email server issue. In that case, you may have see if there is a another valid address address that can receive email at that domain. Or just get an address from that person you're sending it too. Forward this bounce to them so they can forward it to their support staff.

• Two, it could be on your side. Is your address blacklisted? Or is there a misconfiguration (this is what looks like here) where the recipient domain as a local domain in the sending server may be bouncing your email. In your header there was:

From: User user@domain.co.uk
To: User user@domain.co.uk

You may need to forward this to the administrator for the email server for resolution.

@ronnie-wong Can I send you the full bounce back message to your email address please?

Also, tested with another address and it goes through fine.

Waqkas

@waqkas-ahmed,

You'll still need to check the recipient's email address is valid and that they are able to receive an email from another email address you have to that same problematic email address.

You can send it to me but unless my email server bounces it back, it's probably indicative that your email server configuration for that recipient or that domain may need to be reviewed.

@ronnie-wong I have tried sending an email from another mail address e.g. hotmail and gmail and they have gone through fine.

We have been emailing this domain for over 10 years and all of a sudden getting bounce backs.

The only thing I can think of is, we are currently in planning to migrate our on-premise exchange to office365 and I ran an IdFix on the DC to fix a few smtp's.

@waqkas-ahmed,

If all emails from you domain to that domain are getting bounced. Then something has changed on your end.

I would compare previous settings to the current settings for email and see what has changed.

@ronnie-wong This is now working.

The issue was the SPF record was voided as we exceeded the limit of 2.

Thanks for your help.

@waqkas-ahmed,

Great work!