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Known issue : Registration emails not arriving

 

PHPMail() function writing in default envelope-from apache-user@domain in headers. core-n.icerack.net has no corresponding MX record and as such these mails are going to be likely blocked by edge spam filters.

Patched

Passing it to the sendmail binary using the -f option, rather than sending it only in the $headers parameter of the mail() command.

Exim logs looking correct now.
Tested successfully with gmail, who should be strict about this sort of thing.