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I have a weird problem on Plesk 8.6 (CentOS 5.7).

After a server restart, no mail gets delivered thru qmail. Neither to the local mailboxes nor to external addresses. All mail gets accepted, and no error message gets thrown, but the mails disappear. They're not even in the queue. The queue is empty.

In the maillog (/usr/local/psa/var/log/maillog) I get errormessages like this:

all addreses are uncheckable - need to skip scanning (by deny mode)

and later:

Unable to check directory entry dd51-domainkeys: Invalid argument

DNS works (for example dig MX returns the appropriate records). I can also telnet to port 25 on external servers.

An example log showing what happens from the mail arriving until giving up can be found here:

Any idea would be greatly appreciated.

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closed as too localized by Chris S May 21 '13 at 4:52

This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question.

After two months of behaving this way, there was a server restart at the farm and all of a sudden it started to work again. I don't know what was the reason behind, as I also restarted several times when I tried to resolve the issue. – Attila Fulop Jan 16 '12 at 14:22

Check if the below files has anything entries related to the problem domains:,



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