We are having an issue where the newsletter statistics will show as “Sent” for all recipients, but we know that at least some of them are not as we (my client and I) are on the subscribers list and don’t receive the emails. This even happens when we send a newsletter just to the two of us as a test.
I’m fairly certain we are well under the sending limit for our hosting provider (set it to 300/hr. when limit is 400/hr.) and thought we had our SMPT settings configured properly. We sent a newsletter out to just over 1000 subscribers a couple months ago and it appeared to work properly (opens still seemed a bit low, but had ~36% so at least some were sending). Pretty certain we haven’t changed any settings since then.
Hopefully someone can point me in the right direction. Let me know if I should provide any more info.