sendmail problem, stat=Data format error

[Seidel_1]

I have the following problem when I send a mail from host "sindbad":

---------------------------------------------------------------------------
This works fine:


cat /tmp/bdf_on_sindbad.txt | mailx -r UPS@taro -s "Disk usage above defined threshholds on" auser@nmsdu.europe.com


Oct 30 08:09:12 sindbad sendmail[5421]: gethostbyaddr(172.25.122.205) failed: 1
Oct 30 08:09:18 sindbad sendmail[5421]: IAA05421: from=UPS@taro, size=2337, class=0, pri=32337, nrcpts=1, msgid=<200610300709.IAA05421@sindbad.g98.sutelab.dus>, relay=root@localhost
Oct 30 08:09:29 sindbad sendmail[5614]: IAA05421: to=auser@nmsdu.europe.com, delay=00:00:15, xdelay=00:00:01, mailer=esmtp, relay=nmsdu.europe.com. [172.25.111.98], stat=Sent (IAA03791 Message accepted for delivery)


-----------------------------------------------------------------------------
This doesn't work:


cat /tmp/bdf_on_sindbad.txt | mailx -r UPS@sindbad -s "Disk usage above defined threshholds on" auser@nmsdu.europe.com


Oct 30 08:09:46 sindbad sendmail[5929]: gethostbyaddr(172.25.122.205) failed: 1
Oct 30 08:09:47 sindbad sendmail[5929]: IAA05929: from=UPS@sindbad, size=2337, class=0, pri=32337, nrcpts=1, msgid=<200610300709.IAA05929@sindbad.g98.sutelab.dus>, relay=root@localhost
Oct 30 08:09:47 sindbad sendmail[5966]: IAA05929: to=auser@nmsdu.europe.com, delay=00:00:01, xdelay=00:00:00, mailer=esmtp, relay=nmsdu.europe.com. [172.25.111.98], stat=Data format error
Oct 30 08:09:47 sindbad sendmail[5966]: IAA05929: to=UPS@sindbad, delay=00:00:01, mailer=local, stat=User unknown
Oct 30 08:09:47 sindbad sendmail[5966]: IAA05929: IAA05966: postmaster notify: User unknown
Oct 30 08:09:48 sindbad sendmail[5966]: IAA05966: to=root, delay=00:00:01, xdelay=00:00:00, mailer=local, stat=Sent

----------------------------------
The only difference is the sender !

Why does first version work but not the second one ?

[Steven E. Protter]

Shalom,

The receiving servers sendmail configuration is validating the sender as an acceptable sender, in its sendmail access database.

The second server is either explicitly blocked or not permitted because its not in the access database.

Format:

domain OK

Example

sinbad OK
taro OK

This could also be a problem with the access database on the sending system.

sEP

[Seidel_1]

Could it be a problem of the DNS resolution.

When I am logged in to e.g. "sindbad" and I try to send a mail from

auser@sindbad

it fails, as sindbad can be resolved.

If I send it from

auser@kaiko
auser@kanako

where kaiko and kanako can not be resolved by DNS, it is working fine.

Any idea, what to check ?

[spex]

Hi,

Please post the output of:

1) nslookup sindbad
2) grep sindbad /etc/hosts

PCS

[IT_2007]

It is host resolution problem. I had same problem two days ago and fixed it.

what is your nsswitch.conf resolves first like hosts then dns? If so, check /etc/hosts what it listed as fully qualified name for IP address. correct it and that's it.

If it resolves first DNS and then hosts then check /etc/hosts if it matches same as DNS lookup, if not then fix it in /etc/hosts.

[Seidel_1]

sindbad:/etc/mail (189) root% nslookup sindbad
Name Server: sindbad.g98.sutelab.dus
Address: 10.80.9.33

Trying DNS
Name: sindbad.g98.sutelab.dus
Address: 10.80.9.33

sindbad:/etc/mail (190) root% nslookup 10.80.9.33
Name Server: sindbad.g98.sutelab.dus
Address: 10.80.9.33

Trying DNS
Name: sindbad.g98.sutelab.dus
Address: 10.80.9.33

sindbad:/etc/mail (191) root% grep sindbad /etc/hosts
10.80.9.33 sindbad
10.80.9.33 sindbad.g98.sutelab.dus sindbad
sindbad:/etc/mail (192) root% more /etc/nsswitch.conf
#
# /etc/nsswitch.conf for Nokia NetAct
#
# Users and groups are first searched from LDAP, and if not found
# then they are searched from the /etc/passwd and /etc/group files
#

passwd: ldap files
group: ldap files
hosts: dns [NOTFOUND=continue] files
networks: files
protocols: files
rpc: files
publickey: files
netgroup: files
automount: files
aliases: files
services: files



Seems that I have double entries in /etc/hosts, could that be the problem ?