and I am using disk for backup operation.

Here is the waittypes:

waittime lastwaittype

58608032 ...

There is no row in sysmail_faileditems, and the status of all email in sysmail_allitems is unsent.

This is production server and I can not restart it.Will restarting SQL SERER Agent help?

No email has been sent and yes I have restarted multiple times.

No,There is not any specific event in Windows log.

It used to work and all of sudden stoped working.I also chnaged the SMTP authentication to "Anonoumous authentication" and didnt help.

I recieve the alert email,but on subject of email it does not show the Full name of server.I mean it just shows Failure on Server1.The problem is, we have multiple...

No,When I set the job I added notification through GUI(when the job failed,send an email to DBA GROUP).

The Primary server is SQL SERVER 2005 Enterprise Edition (64-bit) and Secondary server is SQL SERVER 2005 Enterprise Edition.

I tried

ping mail.OurServer.com

telnet mail.OurServer.com 25

nslookup mail.OurServer.com

and in all cases it worked correctly and successfully...

Thanks for your replies.This database mail setup used to work,but suddenly stopped working.As I wrote before,I am able to ping and telnet the mailserver(mashine).Regarding authentication,that setting is used in all...

Thanks for your reply

Here is the error messages,that I found:

The mail could not be sent to the recipients because of the mail server failure.

(Sending Mail using Account 1 (2012-06-02T13:14:37)....

Thanks for your reply.

I had the same guess.But we also have log shipping set up on that machine and I noticed that the sizze of transaction logs backups have not...

Thanks alot