Reducing Junk?

[Gongalong]

Hi folks,

 

Any suggestions for reducing junk email?

 

Our Headteacher has complained about the volume of junk email being received – we use Office 365.

 

My guess is that these ‘orrible companies know to target an alias on his mailbox that we have to keep in place for county communications.

 

Any suggestions on what he can do to reduce the volume, short of either putting them in junk, or unsubscribing?

 

Obviously his time is valuable, although we could alias headteacher@ to another mailbox, and/or ask his PA to check them.

 

Thanks

[3s-gtech]

Whitelisting, or strict mail flow policies on that mailbox?

[Gongalong]

Whitelisting... so only specific people can contact this mailbox? I suspect we won't be able to do that, because of likely genuine emails from new people that might contact him.

 

Mail flow policies... I can see a "mail flow" section in the Exchange admin center. Is there a particular part of that I need to look at?

[pete]

TLDR: Don't expose the person with lots of budgetary authority to bulk scam emails.

 

We got rid of the headteacher@ alias years ago (signal/noise ratio) and just run with a generic whatever@school shared mailbox for general enquiries that's heavily filtered. The head's PA and the office manager trawl through it looking for stuff we need to care about.

[Gongalong]

Unfortunately the county require that we have this alias for certain types of communication, although there is the option of running it as a separate mailbox.

[AlanD]

We use TREND antispam which works in the cloud....but yes, it costs money. Used to use Symantec (installed on our exchange) - but they seemed to stop developing it and they seemed to have lost their way.

[pete]

We also have AVG in front of 365 for the moment. The main issue we're seeing is spam between Office 365 tenancies (ignores MX records, goes direct between tenancies as far as I can tell).

[FishCustard]

We block domains at the request of the head/her PA/the office staff if they spam any of our mailboxes.

 

My anti-phishing quarantine rules have a nice side effect of catching a fair bit of marketing crap as well (the ones that block the "display message" nonsense - check the Phishing Emails thread for a regex).