I am running SuSE 8.0 and sendmail8.

I recently set up a dns server and sendmail. I had sendmail running fine, and then suddenly (sometime between 10:30 PM wednesday and thursday morning) messages started bouncing. The log errors read:


SYSERROR(root): MX list for mail.hcmk.net points back to sugar.hcmk.net

my /etc/mail/local-host-names file reads:

#(aliases for localhost)
hcmk.net
www.hcmk.net
ftp.hcmk.net
sugar.hcmk.net
amazonias.org
www.amazonias.org
mail.hcmk.net

and my hcmk.net zone file reads:

$TTL 12H
@ IN SOA ns.hcmk.net. hostmaster.hcmk.net. (
200209152 ; serial, todays date + todays
serial #
8H ; refresh, hours
2H ; retry, hours
1W ; expire, weeks
1800 ) ; minimum, seconds
;
NS ns ; Inet Address of name server
NS dns.fullmers.org.
MX 10 mail ; Primary Mail Exchanger
;
localhost A 127.0.0.1

ns A 166.70.186.50
MX 10 mail

hcmk.net. A 166.70.186.50
MX 10 mail
www CNAME hcmk.net.
sugar CNAME hcmk.net.
ftp CNAME hcmk.net.
mail CNAME hcmk.net.


I tried removing the "mail CNAME hcmk.net." from the dns, but then messages couldn't find the host. I am not sure what the problem is. Maybe it's that both sugar and mail are CNAMEs?

Everything I have found on the internet says tallks about the Cw feature. That feature is enabled and both hosts are in the local-host-names file.

I have been struggling with this for a couple days now. I made some changes to DNS that then resulted in me getting a "message loops back to me" error. Then I made another DNS change, and I got "daemon MTA: problem creating SMTP socket NOQUEUE: SYSERROR(root): opendaemonsocket: daemon MTA: server SMTP socket wedged: exiting" (I did not have another instance of sendmail running.)

Note that my DNS server, webserver and mail server are all the same machine.

Any help would be appreciated.

thanks,
h

Hi,
Its just a question (im no sendmail expert, but I have configured more than a couple of them... never saw that error though...) but do you recieve those error messages with every of the domains listed in /etc/mail/local-host-names ?

-- Gway

Hi,

i've the same situation on a fresh suse 9.0

i've tryied also to add the line
Cwmydomain.com
as last òline in the /etc/sendmail.cf



any idea ?

hcmk

/etc/mail/local-host-names file
Should list only the FQDN sendmail is responsible for, aliases should be dealt with through DNS

hcmk.net
amazonias.org


Also mail should be an A record not a CNAME or alias

NS ns ; Inet Address of name server
NS dns.fullmers.org.
MX 10 mail ; Primary Mail Exchanger
;

localhost A 127.0.0.1

NS ns.hcmk.net.
MX 10 mail.hcmk.net.

hcmk.net. A 166.70.186.50
mail.hcmk.net. A 166.70.186.50
www CNAME hcmk.net.
sugar CNAME hcmk.net.
ftp CNAME hcmk.net.
ns CNAME hcmk.net.

That's how I would do it

Pete