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postfix complains of mystery host

At one point I changed my hostname from mail.jiffycloud.com to cloud1.jiffycloud.com

My postfix however complains about receiving mail for a non-existent machine

Code:

Apr 15 14:56:32 domU-12-31-39-02-BD-C1 sendmail[1567]: o3FItvV8001565: o3FIuWV8001567: DSN: Host unknown (Name server: mail.jiffycloud.com.: non-recoverable error)

Apr 15 14:56:32 domU-12-31-39-02-BD-C1 sendmail[1567]: o3FIuWV8001567: to=<bluethundr {at} gmail {dot} com>, delay=00:00:00, xdelay=00:00:00, mailer=esmtp, pri=31435, relay=gmail-smtp-in.l.google.com. [74.125.113.27], dsn=2.0.0, stat=Sent (OK 1271357792 30si3983691vws.43)

Yet I have grepped my /etc directory for that host and turn up nothing for that hostname except in my backup files:

Code:

[root@cloud1 ~]# grep -ri mail.jiffycloud.com /etc

/etc/postfix/bak/main.cf-.bak:masquerade_domains = mail.jiffycloud.com jiffycloud.com !sub.dyndomain.com

/etc/postfix/bak/main.cf-04-14-10.bak:masquerade_domains = mail.jiffycloud.com jiffycloud.com !sub.dyndomain.com

/etc/postfix/bak/main.04-15-10.cf.bak:masquerade_domains = mail.jiffycloud.com jiffycloud.com !sub.dyndomain.com

/etc/postfix/bak/main.04-07-10.cf.bak:masquerade_domains = mail.jiffycloud.com jiffycloud.com !sub.dyndomain.com

grep: /etc/httpd/run/dbus/system_bus_socket: No such device or address

grep: /etc/httpd/run/audispd_events: No such device or address

grep: /etc/httpd/run/avahi-daemon/socket: No such device or address

grep: /etc/httpd/run/cups/cups.sock: No such device or address

what gives?

I have changed /etc/mailname to my new hostname and have

Greetings,

The first 3 questions that comes to mind for me are as follows:

What is in your /etc/nsswitch.conf file for hosts and networks?
What is in your /etc/resolv.conf?
What is in your /etc/hosts file for the machine itself?

HTH.

the config files you asked for

Greetings,

Quote:

"The first 3 questions that comes to mind for me are as follows":

What is in your /etc/nsswitch.conf file for hosts and networks?

Code:

# # /etc/nsswitch.conf # # An example Name Service Switch config file. This file should be # sorted with the most-used services at the beginning. # # The entry '[NOTFOUND=return]' means that the search for an # entry should stop if the search in the previous entry turned # up nothing. Note that if the search failed due to some other reason # (like no NIS server responding) then the search continues with the # next entry. # # Legal entries are: # # nisplus or nis+ Use NIS+ (NIS version 3) # nis or yp Use NIS (NIS version 2), also called YP # dns Use DNS (Domain Name Service) # files Use the local files # db Use the local database (.db) files # compat Use NIS on compat mode # hesiod Use Hesiod for user lookups # [NOTFOUND=return] Stop searching if not found so far # # To use db, put the "db" in front of "files" for entries you want to be # looked up first in the databases # # Example: #passwd: db files nisplus nis #shadow: db files nisplus nis #group: db files nisplus nis passwd: files shadow: files group: files #hosts: db files nisplus nis dns hosts: files dns # Example - obey only what nisplus tells us... #services: nisplus [NOTFOUND=return] files #networks: nisplus [NOTFOUND=return] files #protocols: nisplus [NOTFOUND=return] files #rpc: nisplus [NOTFOUND=return] files #ethers: nisplus [NOTFOUND=return] files #netmasks: nisplus [NOTFOUND=return] files bootparams: nisplus [NOTFOUND=return] files ethers: files netmasks: files networks: files protocols: files rpc: files services: files bootparams: nisplus [NOTFOUND=return] files ethers: files netmasks: files networks: files protocols: files rpc: files services: files netgroup: files publickey: nisplus automount: files aliases: files nisplus 63,0-1 Bot
What is in your /etc/resolv.conf?

Code:

; generated by /sbin/dhclient-script search compute-1.internal nameserver 172.16.0.23
What is in your /etc/hosts file for the machine itself?

Code:

127.0.0.1 cloud1 cloud1.jiffycloud.com