Hello Folks,
Having a very strange issue , We have a Cognos Application server (IBM Cognos) through which user used to send an email in bulk with excel attachements so what is happening like there are 10 users so mail is reaching to 8 only not to 2 and then again when application
is sending an email then again some other are getting dropped its random not the same everytime. We check the logs / message trace but did not find any issues. and through application they are getting below errors . Its not only external users internal as
well. Any pointers and another logs do we need to check..
CNC-SDS-0335 Error returned from SMTP Server. The error message was: [Exception reading response]. The message could not be sent.
CNC-SDS-0335 Error returned from SMTP Server. The error message was: [Connection reset]. The message could not be sent.
CNC-SDS-0335 Error returned from SMTP Server. The error message was: [[EOF]]. The message could not be sent.
CNC-SDS-0410 The email message was not sent . Approximate message size . The mail server returned this error [[EOF]].
IBM is straight forward is saying that Error is related to SMTP so you need to check SMTP server only