PakOgah wrote:
Hi Jake,
did you get error "deferral: CNAME_lookup_failed_temporarily._(#4.4.3)" on your qmail send log files when try to send @aol.com ?
if so, I got the same problem but with corp.ds.fedex.com
lately (about these 2 weeks) everytime my users want to send email to [EMAIL PROTECTED] the email bounce back and I look at send log file, I got the error "deferral: CNAME_lookup_failed_temporarily._(#4.4.3)"

but from my toaster I can see the MXes and IP
# host -t mx corp.ds.fedex.com
;; Truncated, retrying in TCP mode.
corp.ds.fedex.com mail is handled by 100 memexchfe01.corp.ds.fedex.com.
corp.ds.fedex.com mail is handled by 100 memexchfe03.corp.ds.fedex.com.
corp.ds.fedex.com mail is handled by 200 smtp.zmd.fedex.com.
corp.ds.fedex.com mail is handled by 300 smtp.dmz.fedex.com.
# host memexchfe01.corp.ds.fedex.com
;; Truncated, retrying in TCP mode.
memexchfe01.corp.ds.fedex.com has address 146.18.50.71

and after I ran your script the output is
corp.ds.fedex.com:199.81.197.41


Yes, set a SMTP route for this domain. I have several that I have this problem with.


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Hi Jake,
just ignore my email above, before I want to sent the I give a shot from the result of your script and the result is below..

07-20 23:07:12 delivery 1081: success: User_and_password_not_set,_continuing_without_authentication./<[EMAIL PROTECTED]>_199.81.197.41_accepted_message./Remote_host_said:_250_Ok:_queued_as_819934A0009/

next question is
do I have to run the script daily, weekly or monthly to get the updated MX ?

thx a lot....!!!!!!!

It depends on how often they change their MX record. AOL has been changing it daily for the last week or so, so I run it daily. sympatico.ca has not changed theirs in 2 years.....

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