Solved: Mailer-daemon bounce back.

Jurasik · ‎11-12-2012

Hi.

After migrating to Office 365, all has been well. With exception to an email bounce back for a particular domain.

I am getting an error very similar to this:

bigfish MX

I have contacted the email recipient & they are not blocking me.

They can send to me but when I try to respond, it is bounced back.

Can anybody help?

Stephenc · ‎18-12-2012

Hi Jurasik,

The bounceback is a bit unusual, bigfish is a microsoft server from their 365 platform. Although it is generally generated from the recepient side. The cause of this is you most likely have a MX record setup on your domain name which is likely to be "somethingunique.invalid" this is quite a standard setup, but seems to generate some problems to fix this:

1) Login to myoffice.bt.com - manage services - domains - manage domains - advanced domain manager.

2) Find the MX record in the above format and either:

a) Delete the MX record

b) Add ".mail.eo.outlook.com" to the end of it. e.g. "somethingunique.invalid.mail.eo.outlook.com"

3) b is the preferable option incase the record is needed in future. Any change to the dns can take upto 24 hours to take effect.

If you don't feel comfortable changing this yourself we can do this for you by submitting a general enuiry via www.dnsforms.co.uk

Thanks,

Steve

View solution in original post

Stephenc · ‎11-12-2012

Hi Jurasik,

Can you PM me the bounceback? Is the domain you're sending to hosted by BT?

Thanks,

Steve

Jurasik · ‎18-12-2012

I have sent you a PM with the message body.

The email (I think) is being blocked by Bigfish.

The domain is hosted by USA & International Commercial.

Sam Spade also reports that the domain was registered by Total Web Solutions (trading as totalregistrations).

Hope this helps.

Stephenc · ‎18-12-2012

Hi Jurasik,

The bounceback is a bit unusual, bigfish is a microsoft server from their 365 platform. Although it is generally generated from the recepient side. The cause of this is you most likely have a MX record setup on your domain name which is likely to be "somethingunique.invalid" this is quite a standard setup, but seems to generate some problems to fix this:

1) Login to myoffice.bt.com - manage services - domains - manage domains - advanced domain manager.

2) Find the MX record in the above format and either:

a) Delete the MX record

b) Add ".mail.eo.outlook.com" to the end of it. e.g. "somethingunique.invalid.mail.eo.outlook.com"

3) b is the preferable option incase the record is needed in future. Any change to the dns can take upto 24 hours to take effect.

If you don't feel comfortable changing this yourself we can do this for you by submitting a general enuiry via www.dnsforms.co.uk

Thanks,

Steve

Jurasik · ‎18-12-2012

I've done the `add to the invalid' account thing.

I'm now on holiday until the new year, I'll report back then.

Thanks.

Stephenc · ‎18-12-2012

Thanks Jurasik,

It should be fine by tomorrow, but let me know if you have any issues.

Thanks,

Steve

pennineprint · ‎03-03-2013

Why cant any body give an answer on this, bt should have a proper answer page