DMA_GROUP
logfail(EX_CONFIG, "cannot find dma group `%s'", DMA_GROUP);
logfail(EX_NOPERM, "cannot set gid to %d (%s)", mail_gid, DMA_GROUP);
logfail(EX_NOPERM, "cannot set gid to %d (%s), still at %d", mail_gid, DMA_GROUP, getegid());
gr = getgrnam(DMA_GROUP);
#ifndef DMA_GROUP