Dovecot permission denied errors on NFS after upgrade to 2.2.17

[Claudio Corvino]

Hi everyone,

after some hours when I sent my last e-mail to the ML the problem 
reoccurred, again problem with some mailboxes reading some e-mails and 
many errors into dovecot.log like these:

/Jul 14 15:07:50 imap(XXX): Error: 
open(/mnt/mail-storage/XXX/Maildir/cur/1594641298.M607225P10899.XXX,S=4465,W=4534:2,m) 
failed: Permission denied (euid=501(vmail) egid=501(vmail) missing +r 
perm: 
/mnt/mail-storage/XXX/Maildir/cur/1594641298.M607225P10899.XXX,S=4465,W=4534:2,m 
stat(/mnt/mail-storage/XXX/Maildir/cur/1594641298.M607225P10899.XXX,S=4465,W=4534:2,m) 
failed: Permission denied)/

SElinux is not installed and Dovecot NFS client uses "defaults" option 
to mount NFS partition with mailboxes in it and version=3.

Don't know where to look further.

Any help appreciated!

Regards


On 14/07/20 11:13, Claudio Corvino wrote:
> Strange behavior but after a reboot of the Dovecot server, the error 
> disappeared from logs (like Windows style! :-)).
>
> I'll monitor the situation and take you updated in case it should come 
> back.
>
> Thanks all!
>
> On 13/07/20 20:27, John Stoffel wrote:
>>>>>>> "Mark" == Mark Moseley <moseleymark at gmail.com> writes:
>>
>> Mark> This is just me throwing things out to look at, but did the
>> Mark> client mount on the old server use NFS3 and the new upgraded
>> Mark> client uses NFS4? Sometimes that can cause weirdness with id
>> Mark> mapping.
>>
>>
>> Another thing to check is selinux, is it enabled?  It's one of those
>> things I have to poke at on RHEL systems, but I can't remember if it's
>> on by default on Debian Buster.
>>
>>     getenforce
>>
>> would answer one way or another.
>> John
>
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