Re: Random 550 5.1.1 when sending mail to a virtual domain alias

2013-12-13 Thread Venkat
> > > Quite possibly it is, see: > > http://www.postfix.org/DATABASE_README.html#safe_db > > The best solution is to use CDB, rather than Berkeley DB for these, > if your Postfix package supports CDB, use it. CDB performs updates > atomically and uses less memory, ... If switching to CDB

Re: Random 550 5.1.1 when sending mail to a virtual domain alias

2013-12-12 Thread Viktor Dukhovni
On Thu, Dec 12, 2013 at 10:10:37PM -0800, Venkat wrote: > Is rebuilding the virtual.db file frequently (every few minutes) causing > Postfix to lose access temporarily to the aliases in that database causing > the random lookup failures? Quite possibly it is, see: http://www.postfix.org/

Random 550 5.1.1 when sending mail to a virtual domain alias

2013-12-12 Thread Venkat
Hello all, I wanted to get the list's advice on a rather odd problem we've been experiencing on our Postfix mail relays. We are running Postfix 2.6.6 on Redhat Enterprise Linux 6.3. There are 3 Postfix mail relays which sit behind a Cisco ACE load balancer that performs round-robin load balancing.