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SMTP transient error [message #189688] Fri, 25 August 2006 10:16 Go to next message
Messages: 17
Registered: June 2006
Location: karachi, Pakistan
Junior Member

we have two servers in our organization .one is test server and other is production server.Both system are exact copy of each other. we have send mail code on both servers but on production server its not working and returning following error

ORA-29278:SMTP transient error:421 service not available

Defined IP of mail sever is same on both. production server can also ping the mail server but not sending the mails. what would be possible reason?

one thing more as we change the IP of mail sever(we have another mail server) then mails are generating.

Re: SMTP transient error [message #189773 is a reply to message #189688] Sun, 27 August 2006 03:09 Go to previous message
Messages: 7880
Registered: March 2000
Senior Member
Does the mailserver accept connections from that system? (can you telnet from your server to port 25 of the mailserver and manually create a mail?)
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