SMTP / NDR Email Bounceback Error Codes
Wed, Jun 9, 2010I’m sure everyone has run across their fair share of non-deliverable e-mails generated when an e-mail fails to deliver properly.
AnswersThatWork put together a comprehensive listing of many of the SMTP error codes you may encounter.
Diagnostic information for administrators:
Generating server: MAILSERVER01.USA.domain.com
#550 5.2.3 RESOLVER.RST.SendSizeLimit; message too large for this sender ##
Original message headers:
Received: from mailserver.usa.domain.com ( 11.11.111.111) by
MAILSERVER.USA.domain.com (22.22.22.222) with Microsoft SMTP Server id
8.1.375.2; Wed, 9 Jun 2010 13:56:34 -0400
Received: from mail pickup service by mailserver.usa.domain.com with
Microsoft SMTPSVC; Wed, 9 Jun 2010 13:56:34 -0400
thread-index: AcsH/Riook2drmT4RMagcjsumJ5YiA==
Thread-Topic: Reservation Request
From: [email protected]
Subject: Reservation Request
Date: Wed, 9 Jun 2010 13:56:33 -0400
Message-ID:
MIME-Version: 1.0
Content-Type: multipart/mixed;
boundary=”—-=_NextPart_000_002E_01CB07DB.91969BF0″
Content-Transfer-Encoding: 7bit
X-Mailer: Microsoft CDO for Windows 2000
Content-Class: urn:content-classes:message
Importance: normal
Priority: normal
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.3168
X-OriginalArrivalTime: 09 Jun 2010 17:56:34.0824 (UTC) FILETIME=[19A03080:01CB07FD]
Return-Path: [email protected]
