Missing registration mail

[akugel]

Hello.
On Cpg 1.5.20 admin gets only some of the registration mails: all of (German ...)
Registrierungs-Benachrichtigung
but only some of
Registrierungsversuch

The latter contains the link to the activation page.
I have to maunally activate the user, in which case he/she probably doesn't get the acknowledge mail.

I was not able to identify a pattern in the related user names or e-mails.

I've read the few posts with similar topics (sporadic missing e-mails ...) but didn't find an applicable solution.

Any ideas?

Thanks

[phill104]

Can you check server logs to see if the mail is sent? 99% of these missing mail problems are isp's or users spam filters blocking them out in some way.