Some incoming business emails being blocked?

[#1]

@jab1  Are you using the Plusnet spam service ?

[#2]

@Champnet Nope - that's been 'not in use' for a long time, all my filtering is done via MW.

[#3]

@jab1  That may answer @Dalesman ‘s question “How can this affect some Plusnet addresses and not other?”

[#4]

It would help with discussions if these issues were raised direct with the support desk and their responses be reported back here. Profiling questionable spam filtering is of particular interest to the SUs.

[#5]

@Townman Just spent an hour on the phone to Customer Support. They broke off several times to talk (I think) to their back office. No resolution so far, as they are basically stumped. For back office to investigate further, they say they MUST have message headers for any undeliverable message which senders receive when this happens. This is quite a big ask and assumes that businesses, even those with an IT department, can be bothered to help to that extent. 

Interestingly, and this is a good one, the CS agent could see that Plusnet emailed me (probably an automated email) on 18th March and that too bounced back. Unfortunately, they can't use the undeliverable message header from that one because they are only kept for 7 days.

[#6]

@Dalesman on the spam filter settings, have you tried with spam filtering enabled but with 'discard obvious spam' unchecked

[#7]

@MisterW  Oh, no I don't think I've tried that - I'll give it a go. What's the thinking behind it?

[#8]

AIUI it stops the system automatically discarding what it believes is definitely spam. Further down on the spam settings , It then allow you to specify the spam scoring and actions for what exceeds the spam score.

You MAY then able to adjust the spam score to get rid of the real spam and still get the ones that are currently being dropped in error, by looking at the spam score in the headers.

[#9]

MW = mailwasher?

[#10]

Have a paper star, @greygit1 

[#11]

@dalesnan

Thank you for your preservation with this. The feedback from the helpdesk engagement is very helpful. I will cite this post in the internal discussions on business process improvement.