With the recent launch of Blackberry’s new devices, in particular the Z10, we have seen many of our Canadian Web Hosting customers embrace the new device and have heard a lot of positive feedback. Unfortunately, there seem to be a common email issue for customers that is both troublesome and may require a patch from Blackberry to fix. Customer should note that Blackberry z10 emails may not be able to be sent through your web hosting company.
Over the recent days, we had numerous chats with Blackberry support because of numerous complaints and reports of emails not being delivered. The technicians that we spoke to have also confirmed the way emails are being configured on the BlackBerry Z10 is not RFC2822 compliant. Instead, the emails are being configured with LF (line feed) on the formatting and not CRLF (carriage return line feed). This is significant, because in breaking RFC2822 (http://tools.ietf.org/html/rfc2822) many mail servers and Spam appliances, including industry leading devices from companies like Barracuda, check against this standard and non-compliance will typically mark those emails as Spam and force non-delivery.
As an example, our email server logs also confirm this with messages like these below:
—- ———————- ————————————————–
0.14 MISSING_MID Missing Message-Id: header
0.01 INVALID_DATE Invalid Date: header (not RFC 2822)
0.00 MIME_HTML_ONLY BODY: Message only has text/html MIME parts
0.00 HTML_MESSAGE BODY: HTML included in message
1.05 HTML_MIME_NO_HTML_TAG HTML-only message, but there is no HTML tag
0.20 MISSING_MIMEOLE Message has X-MSMail-Priority, but no X-MimeOLE
1.19 K2_MISSING_MIMEOLE Message has X-MSMail-Priority, but no X-MimeOLE
1.76 INVALID_DATE_2 Invalid Date: header (not RFC 2822)
After further review, the only viable work around is to have that email address whitelisted or have BlackBerry come out with a patch. Many web hosts like Canadian Web Hosting will be reluctant to whitelist IPs because of the potential that these mail IPs may be abused to get blacklisted, which in turn will cause even more emails to be blocked. You can find further discussion in Blackberry’s support forum including threads like this one – http://supportforums.blackberry.com/t5/BlackBerry-Z10/z10-faulty-code-BUG-emails-may-not-be-sent-released-if-you-have/td-p/2195691.