On 27.9.2013, at 11.31, Oleksii Krykun <kr...@bigmir.net> wrote: > I have dovecot-2.2.5 installed as part of postfix+dovecot+mysql+amavisd. > My server has two NICs (Internet and local). /etc/resolv.conf point to ISP > DNS. Local names are not resolved. > > If ISP link goes to down state I see (after about 1minute) a following error: > > Sep 26 15:44:29 pop3-login: Error: master(pop3): Auth request timed out > (received 0/12 bytes)
auth process is hanging. > and following informational message: > > Sep 26 15:44:29 pop3-login: Info: Internal login failure (pid=12809 id=17815) > (internal failure, 1 successful auths): user=<x...@xxx.xxx> ..... > > If link is restored (even for a short time) all works fine again. After next > down errors are repeated. > > I suppose that this is dns issue. Am I wrong? Could be. > And I have a following question. > Is it possible to disable dns requests? I haven't external clients. Or I must > fix a name resolution e.g. to use a caching dns server? Dovecot doesn't do DNS requests itself, exactly because of problems like these. Your passdb or userdb might do that though. Show your doveconf -n?
