Extremely High Bandwidth from Mailbox to Hornbill

[Michael Sharp]

The mailbox responsible for emails being delivered to Hornbill is generating sending DAILY upload traffic of 37.4GB however the total size of emails being delivered to Hornbill is nowhere near this amount.  Please can this be explained?  The mailbox does not function any other service and is not leveraged by Hornbill for outbound emails.  Report figures as follows:

Internal Mailbox Sent Bandwidth             37.4GB
Internal Mailbox Received Bandwidth   510.2MB
Session Count for Internal Mailbox             9602

Regards,

Mike.

[Keith Stevenson]

Micheal,

Thanks for the post. Can you confirm where those stats come from?

Kind Regards

[Michael Sharp]

Hi Keith,

These stats are generated from our outbound router.  I can share this report privately if required.

Regards,

Mike.

Edited June 20, 2017 by Michael Sharp
additional detail

[Steve Giller]

Is that the actual wording of the report?
Bandwidth isn't a measure of the amount of data transferred, it's the maximum amount you could send in a set period of time.

[Keith Stevenson]

Micheal,

Thanks for the reply.  Your instance is configured for us to Download email from your internal mail server via IMAP, so we would be connecting\pulling and uploading nothing (I suppose your router may count the commands we use to connect\view IMAP mailbox and download anything it finds as uploads but thats going to be far less than 37.4GB - probably < 10mb for entire day).

Can you provide the report as a private message? Perhaps its the wording thats wrong?

Kind Regards

Keith Stevenson

[Michael Sharp]

Hi Keith,
We will review this at a firewall level and come back if there are further issues.  A thought we've had is that all exchange DAG traffic is being marked with the first user that has activity for the day (as this mailbox polls all day every day, it might be the highest likely).  @DeadMeatGF this report shows actual data volume sent/received and appreciate "bandwidth" isn't the best term (we don't write the reports unfortunately) but we have a 200Mb/s dedicated line with various other users consuming vastly less in the same report.

Regards,

Mike.