Re: messagelabs.com contact - SMTP-side domaincheck checks IPv4 only, rejects domains with first MX on IPv6

2011-06-06 Thread Jeroen Massar
On 2011-Jun-06 00:07, Matt Sergeant wrote: I'll get someone to contact Ford and see what they are running. From google it looks like Exchange. Is this a known bug with Exchange? If so I think there's bigger problems than messagelabs :) Ah good catch, indeed the messagelabs.com SMTP is not the

messagelabs.com contact - SMTP-side domaincheck checks IPv4 only, rejects domains with first MX on IPv6

2011-06-05 Thread Jeroen Massar
As the subject states, mailer-dae...@messagelabs.com: @ford.com: Connected to 136.1.7.8 but sender was rejected. Remote host said: 501 Sender domain must exist As it obviously checks only the first MX record if there are A records, and if there are none it rejects it. This while there are

Re: messagelabs.com contact - SMTP-side domaincheck checks IPv4 only, rejects domains with first MX on IPv6

2011-06-05 Thread Matt Sergeant
I'll get someone to contact Ford and see what they are running. From google it looks like Exchange. Is this a known bug with Exchange? If so I think there's bigger problems than messagelabs :) Jeroen Massar wrote: As the subject states, mailer-dae...@messagelabs.com: @ford.com: