The MSP's policy can be whatever they want as long as it IS advertised.
If they say "We drop 10% of messages at random, and you knowingly choose to take that, then that is just a stupid arrangement you should never agree to, but they aren't doing something unexpected.
I decline to believe you are as stupid as that remark.
Good faith best effort is perfectly reasonable. Not knowingly and intentionaly discarding mail is all that's required.
If you're the mailman, you do not have to garantee that you will never lose a single letter in a car accident.
But you can certainly garantee, absolutely, that you never go through the bag and throw away all the spam and sometimes mistake a legit letter from a lawyer for lawyer spam.
You can ceetainly garantee, absolutely, that you never apply utterly thoughtless rules like "we got these scam letters from Nigeria so now we just throw away anything from Nigeria."
You should absolutely be responsible for other peoples stuff that is in your hands while it is in your hands. It's not yours to dispose of, even when part of your explicit job is to filter. If that sounds onerous, that's why you get paid money for the responsibility. If it's too hard to bear this responsibility properly, then you have no business doing that job. Do the job right or don't do the job. There is nothing unreasonable about those two choices. It is not at all required to do the job, but poorly or carelessly.
> The MSP's policy can be whatever they want as long as it IS advertised.
No.
Suppose the MSP uses bayesian filtering? How would one go about advertising a policy that depends on bayesian filtering? You'd have to publish the contents of your filter table. The only people who could benefit from that would be spammers, who could use the data to customise their spam.
In general, telling the world what your filtering policies are is just going to cause spammers to try to sidestep your policies. The only policy that you maybe ought to publish would be along the lines of "We filter out spam; that sometimes results in false positives. Sorry."
If they say "We drop 10% of messages at random, and you knowingly choose to take that, then that is just a stupid arrangement you should never agree to, but they aren't doing something unexpected.
I decline to believe you are as stupid as that remark.
Good faith best effort is perfectly reasonable. Not knowingly and intentionaly discarding mail is all that's required.
If you're the mailman, you do not have to garantee that you will never lose a single letter in a car accident.
But you can certainly garantee, absolutely, that you never go through the bag and throw away all the spam and sometimes mistake a legit letter from a lawyer for lawyer spam.
You can ceetainly garantee, absolutely, that you never apply utterly thoughtless rules like "we got these scam letters from Nigeria so now we just throw away anything from Nigeria."
You should absolutely be responsible for other peoples stuff that is in your hands while it is in your hands. It's not yours to dispose of, even when part of your explicit job is to filter. If that sounds onerous, that's why you get paid money for the responsibility. If it's too hard to bear this responsibility properly, then you have no business doing that job. Do the job right or don't do the job. There is nothing unreasonable about those two choices. It is not at all required to do the job, but poorly or carelessly.