Thanks for your help. I've been away for a few days and not able to test things. Here's the results of what you ask:
On Fri, Jul 19, 2019 at 01:08:28AM +0300, Evgeniy Berdnikov via Exim-users
wrote:
[SNIP]
> Quite puzzling... The only difference I see here is the presence of one
> authority record in dns query from Exim, marked as [1au].
> Tcpdump man page states:
>
> A few anomalies are checked and may result in extra fields enclosed in
> square brackets: If a query contains an answer, authority records or
> additional records section, ancount, nscount, or arcount are printed as
> `[na]', `[nn]' or `[nau]' where n is the appropriate count.
>
> Running tcpdump with -vvv shows that there is an authority record for root.
> I don't know is this behaviour legal or not, and why this record is present
> in exim queries. But I propose to try two other methods to resolve name:
>
> 1: exim4 -be '${lookup dnsdb{a=smtp.gmail.com}{$value}fail}'
This returns:
Failed: "lookup" failed and "fail" requested
> 2: perl -e '($n,$a,$t,$l,@ip)=gethostbyname("smtp.gmail.com"); print
> "n=$n\na=$a\n"; for (@ip) {($w,$x,$y,$z)=unpack('W4',$_); print
> "$w.$x.$y.$z\n"}'
This returns:
n=gmail-smtp-msa.l.google.com
a=smtp.gmail.com
74.125.68.108
--
David Purton
e: dcpur...@marshwiggle.net
m: 0413 626 862
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