Minires truncates host names

Sat Jul 5 21:37:00 GMT 2014

> -----Original Message-----
> From: D. Boland
> Sent: Saturday, July 05, 2014 16:12
>> Hi Group,
>> I finally got Sendmail ported to Cygwin. But when looking up valid
hostnames
> from sender addresses, Minires fails. Here's the output, testing one of
> Sendmails' rules.
>> $ echo "check_mail daniel@cygwin.com" | /usr/sbin/sendmail -d8.20 -bt
> readcf: option TrustedUser may cause problems on systems
> which do not support fchown() if UseMSP is not set.
> ADDRESS TEST MODE (ruleset 3 NOT automatically invoked) Enter <ruleset>
> <address>
> > check_mail input: daniel @ cygwin . com
> Basic_check_mail input: daniel @ cygwin . com
> tls_client input: $| MAIL
> TLS_connection input:
> TLS_connection returns:
> tls_client returns:
> CanonAddr input: < daniel @ cygwin . com >
> canonify input: < daniel @ cygwin . com >
> Canonify2 input: daniel < @ cygwin . com >
> dns_getcanonname(cygwin.com, trymx=1)
> dns_getcanonname: trying cygwin.com. (A)
> Minires: query "cygwin.co." type 1
> Minires: DnsQuery: 9003 (Windows)
> NO: errno=0, h_errno=1
> Canonify2 returns: daniel < @ cygwin . com >
> canonify returns: daniel < @ cygwin . com >
> Parse0 input: daniel < @ cygwin . com >
> Parse0 returns: daniel < @ cygwin . com >
> CanonAddr returns: daniel < @ cygwin . com >
> Basic_check_mail returns: $# error $@ 5 . 1 . 8 $: "553 Domain of sender
> address " "
> does not exist"
> check_mail returns: $# error $@ 5 . 1 . 8 $: "553 Domain of sender
> address " "
> does not exist"
> >
>> As can be seen, Minires queries "cygwin.co.", not "cygwin.com." Is this a
> bug? Is there a way to test Minires lookups outside of Sendmail?

The Minires output above is produced at the top of the res_nquery function
by the following lines
int res_nquery( res_state statp, const char * DomName, int Class, int Type, 
695 unsigned char * AnsPtr, int AnsLength) 
696 { 
697 u_char packet[PACKETSZ]; 
698 int len; 
699 
700 DPRINTF(statp->options & RES_DEBUG, "query \"%s\" type %d\n", DomName,
Type); 
To me it looks like the string was already truncated when it was passed to
the function.
You can test e.g. by using exim -d+resolver -bt daniel@cygwin.com
It's wonderful that you got sendmail to work.
Pierre

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