Non-delivery of email sent by automated services to altlinux.org

Quite often automated user verification emails (from other wikis, forums, services, etc.) don't pass through to my altlinux mailbox. One such case has been investigated and the reason was:"altlinux.org appears to be doing sender-callback-verification... the apache@mozilla.org address indeed appears to be missing now. It used to exist (exactly for this reason) so I'm not sure what happened to it.  I just put it back."

For administrators of external services that send automated emails:
If the users from altlinux.org have problems with receiving the messages, please make your service even better: make sure your service has everything to pass this "sender-callback-verification"!

Suspected

 * http://bugs.mcst.ru/bugzilla/show_bug.cgi?id=1209 (a Bugzilla installation) (mike@: do you confirm that you haven't received a message as a CC in, ?)

Bad (not fixed)

 * https://ghc.haskell.org/trac/haskell-prime (a Trac installation)
 * ? https://en.bitcoin.it and https://ru.bitcoin.it (a MediaWiki installation)

General solution

 * https://bugzilla.wikimedia.org/show_bug.cgi?id=21347 (in MediaWiki)

Good (fixed)

 * https://bugzilla.mozilla.org/show_bug.cgi?id=524822 (a MediaWiki installation)
 * https://bugzilla.mozilla.org/show_bug.cgi?id=153051#c5 (a Bugzilla installation)
 * repo.or.cz's key updates

My fault

 * https://bugs.freedesktop.org/show_bug.cgi?id=73703 (a Bugzilla installation) was my fault: the emails from a bugzilla were filtered and deleivered to a separate mailbox. (Registered successfully now.)