For some time (with us in mid-November 2017) fell on, not got that email from Magento Store in various Emfpängern. More or less from one day to the next was radio silence.
But it is not concerned this is a general problem. The Magento shop sent the mail. They just do not arrived. Strikingly often, they were not delivered with corporate email addresses. For vendors like GMX delivery worked fine.
Also in the SPAM filter the e-mails were not stuck.
Now we have put ourselves on troubleshooting and found, that the "problem" email providers have made an adjustment in their delivery requirements (our in November).
simply put: Is there any mail, "Pings" the mail server of the sender. Is the ping into space, the mail is not delivered. (VERY simple forum profiled!)
Magento was already very noticeable, that any desired mail address - even that with which they had nothing to do- could enter the backend easily and shop-mails then apparently came from this address. Only a look in the mail header then showed, that this was not the real sender.
For reliable delivery so you have to use a really existing mail account - and access to it should also have. To this account now engage in their own shop, you can Free, long-known and very performant Extension SMTP-Pro use of Ashley Schroder. This is equal to killing two birds with one stone, as it not only allows the integration of an SMTP server but also for Magento 1.9 existing mail queue can turn, so that mails are sent directly, not only through the CRON (s.a. here).
Installation is not a problem and absolute standard. set up the device easier than its own mail client (since only the output server is needed).
Then, the mail delivery is working again wonderful and the receivers tested in previously all.
Should the way the M.E. brilliant PDF Document Extension PDF-Print use of SNM Portal, There is a conflict here, but one can quickly solve.
You open the app / code / community / auit / PDF / Model / rewrite / Email / template.php and replace the line
class AuIt_Pdf_Model_Rewrite_Email_Template extends Mage_Core_Model_Email_Template
class AuIt_Pdf_Model_Rewrite_Email_Template extends Aschroder_SMTPPro_Model_Email_Template
In more recent versions of the extension line is even available and only needs to be activated and the other commented out.
Used in Magento Version 1.9 Comments? Additions? Notes? Gladly!