Segmentation fault in file lookups

ilya@slip-3:/fox/u3/i/l/ilya> /usr/lib/sendmail -bt -d99 aaa@???
file lookup required for xaxa.com in /etc/exim/strict-domaina
address aaa@???
local_part=aaa domain=xaxa.com local=1
Directing aaa@???
search_open for /etc/exim/strict-domaina found it cached
cached data used for lookup of xaxa.com in /etc/exim/strict-domaina
strict_domain_aliases director: file =
/etc/exim/strict-domain-aliases/xaxa.com search type = 0
strict_domain_aliases director skipped: file missing and optional flag set
search_open for /etc/exim/strict-domaina found it cached
cached data used for lookup of xaxa.com in /etc/exim/strict-domaina
nosuchuser director called for aaa@???
file lookup required for xaxa.com in /etc/exim/strict-domainb
Segmentation Fault
ilya@slip-3:/fox/u3/i/l/ilya>

    Directors which cause it:

strict_domain_aliases:
        driver = aliasfile,
        domains = lsearch;/etc/exim/strict-domaina;
        file = /etc/exim/strict-domain-aliases/$domain,
        optional,
        search_type = lsearch

nosuchuser:
        driver = smartuser,
        no_more,
        domains = lsearch;/etc/exim/strict-domaina;
        new_address = ${lookup{xaxa.com}lsearch{/etc/exim/strict-domainb}{bar.com}}

    Ilya