Re: [exim] LDAP for SMTP auth not working

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Author: Paul Muster
Date:  
To: exim-users
Subject: Re: [exim] LDAP for SMTP auth not working
On 07.03.2013 20:43, Paul Muster wrote:

> Now... After replacing server name "ldap" by it's IP address 192.168.1.8
> it works!!
>
> But why? DNS is ok:
>
> # su Debian-exim
> \h:\w$ nslookup ldap
> Server:         192.168.1.1
> Address:        192.168.1.1#53

>
> Name: ldap.domain.tld
> Address: 192.168.1.8
>
> \h:\w$ host ldap
> ldap.domain.tld has address 192.168.1.8
> \h:\w$


nslookup and host are successful while dig fails:

# su Debian-exim
\h:\w$ dig ldap

; <<>> DiG 9.8.4-rpz2+rl005.12-P1 <<>> ldap
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 51789
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;ldap.                          IN      A


;; AUTHORITY SECTION:
.                       4051    IN      SOA     a.root-servers.net.
nstld.verisign-grs.com. 2013030701 1800 900 604800 86400


;; Query time: 0 msec
;; SERVER: 192.168.1.254#53(192.168.1.254)
;; WHEN: Thu Mar 7 21:01:44 2013
;; MSG SIZE rcvd: 97

\h:\w$

Accordingly it also works when putting LDAP server's FQDN in Exim
authenticator. But why?

# cat /etc/resolv.conf
domain domain.tld
search domain.tld
nameserver 192.168.1.1


Thanks & greetings,

Paul