Thread: Calibre 4.1 suddenly not sending out
View Single Post
Old 10-22-2019, 08:20 PM   #32
davidfor
Grand Sorcerer
davidfor ought to be getting tired of karma fortunes by now.davidfor ought to be getting tired of karma fortunes by now.davidfor ought to be getting tired of karma fortunes by now.davidfor ought to be getting tired of karma fortunes by now.davidfor ought to be getting tired of karma fortunes by now.davidfor ought to be getting tired of karma fortunes by now.davidfor ought to be getting tired of karma fortunes by now.davidfor ought to be getting tired of karma fortunes by now.davidfor ought to be getting tired of karma fortunes by now.davidfor ought to be getting tired of karma fortunes by now.davidfor ought to be getting tired of karma fortunes by now.
 
Posts: 24,905
Karma: 47303824
Join Date: Jul 2011
Location: Sydney, Australia
Device: Kobo:Touch,Glo, AuraH2O, GloHD,AuraONE, ClaraHD, Libra H2O; tolinoepos
Quote:
Originally Posted by BobC View Post
In all the test cases the emails appear to have been sent from a btinternet.com address to a kindle.com address. Have you tried sending a "loopback" from the btinternet address to the same address. That way you eliminate the possible issue of Kindle rejecting the incoming file for some reason (perhaps related to the SMTP header that Calibre generates).

Also worth checking is that your IP address hasn't found it's way onto a blacklist used by ISPs to silently dump mail. spamcop.net is a useful way to check. Remember that unless you have a static IP address (unlikely with btinternet) some previous "owner" of what is now your IP address may have got it blacklisted.
This is worth checking, but, doesn't feel right. If it is a spam blocking issue, it should be blocked elsewhere as well. But, missing email can be tricky, as the receiver needs to know it was sent and not received.

Another way of testing this would be to use another internet service. Connecting via a phone as a hotspot is what I would try, but that will depend on the machines involved. You would also want to use the btinternet mail servers to send the email. Whether that is possible depends on how they have setup their servers. You will probably need to use the secure servers/ports unless the other service is also through btinternet.
davidfor is offline   Reply With Quote