false negatives?

[JuanIrache]

Hello, thanks for this tool. It's great!

It seems to give lots (all?) of negatives (false validMailbox) for icloud emails. Is this to be expected?

[itayper]

Experiencing the same issue here.
I find it hard to trust validMailbox

[jmnsf]

@JuanIrache @itayper Because of spammers, ESPs make liberal interpretations and implementations of email protocols. In this case, some ESPs can be trusted with their mailbox check replies (eg. gmail) while others are very unreliable. They're also bound to change said implementations at will.

It looks like icloud is one of these cases; I don't remember having issues with them back when I was using this lib, but something may have changed in the interim. I'm sure a PR that handles these cases (by returning null for example) would be appreciated 👍

[DorianLovera]

Have the same issue with @bbox.fr