sendmail

[Linda Lux]

I am getting an error in my sendmail log:

ruleset=check_mail, arg1=AmericanID.com>, relay=fax [192.168.1.30], reject=501 Sender domain must exist

and when I restart sendmail:
root 1473 1 0 13:07:42 ? 0:00 sendmail: server fax [192.168.1.
30] cmd read

this comes up.
What file am I missing an entry in for this?

[Steven E. Protter]

I have verified that the domain DOES exist.

The problem is probably with the DNS configuration of teh mail relay server.

That server needs to have its DNS connections checked. If its a Unix box, /etc/resolv.conf and or /etc/nsswitch.com should be checked.

SEP

[Jeff Schussele]

Hi Linda,

Believe this is being rejected because sendmail is not able to resolve an MX record for that 192.168.1.30 IP - the sender.
If you're using that faxserver to handle e-mail, you have to get it into DNS with an MX record. Sendmail is *very* picky about name resolution - in both directions - and rightly so. That's how spammers work.

Rgds,
Jef

[Linda Lux]

should i have an entry in the resolv.conf
nameserver 192.168.1.30
?

in my nsswitch.conf files I have

hosts: files

Linda

[Steven E. Protter]

After re-reading the message, you might get further diagnosis from the following command:

sendmail -v -d8.99 -d38.99 FaxSr@AmericanID.com
type some text

.



Also, nslookup on the source server.
check for type MX.

SEP

[Steven E. Protter]

nsswitch.conf is set to files.

Name resolution will take place in /etc/hosts only.

change nsswitch.conf to files,dns

Then you need to put a valid dns server in /etc/resolv.conf If the 192.168.1.30 server returns a valid answer for yahoo.com or americanid.com then yes, if not, see network administration for a valid one.

Your firewall may let you resolve dns on an outside DNS server provided by your ISP. More likely there is an internal one, which must be pointed at in /etc/resolv.conf

SEP

[Michael Steele_2]

Use this command to verify the destination alias with the SMTP server. This command queries the STMP server and it responds with user known or unknown.

sendmail -v you@your_domain.com < /dev/null

-or-

sendmail -bv you@your_domain.com < /dev/null

[Uday_S_Ankolekar]

If you are having DNS setup in your Network then Nsswitch.conf should have entry similar to this.
hosts: files [NOTFOUND=continue UNAVAIL=continue] dns [NOTFOUND=return UNAVAIL=continue TRYAGAIN=return]

and resolv.conf should have
domain yourdomain.com
nameserver ip address # Primary Name Server
nameserver Ip address # Secondary Name

Goodluck.
-USA..

[Michael Steele_2]

I'm sorry. You're obviously not getting the response that you're looking for. So could you go to the mail.log file and copy / paste in the errors? Thanks!

tail /var/adm/syslog/mail.log

[Linda Lux]

here is the linse of errors

Oct 7 13:07:40 K460 sendmail[13880]: NOQUEUE: timeout waiting for input from fa
x during server cmd read

Oct 7 13:07:43 K460 sendmail[1476]: NAA01476: ruleset=check_mail, arg1=mericanID.com>, relay=fax [192.168.1.30], reject=501 Sender domain must exist

Oct 7 13:07:43 K460 sendmail[1476]: NAA01476: from=, size
=0, class=0, pri=0, nrcpts=0, proto=SMTP, relay=fax [192.168.1.30]

[Michael Steele_2]

Please run a traceroute to the dest. domain. Note the router. Maybe add a static route so the router knows where to go.