Apr 14 09:49:12 server sendmail: i3E1eriB030802: collect: premature EOM: unexpected close
Apr 14 09:49:12 server sendmail: i3E1eriB030802: collect: unexpected close on connection from [203.xxx.xxx.xxx], sender=<email@example.com>
Apr 14 09:49:12 servser sendmail: i3E1eriB030802: from=<firstname.lastname@example.org>, size=3, class=0, nrcpts=1, proto=ESMTP, daemon=MTA, relay=[203.xxx.xxx.xxx]
My platform is that a Exchange server auto forward a mail to Redhat sendmail server. But the Exchange server sometimes hold many mails on queue for last few weeks. In fact, the Exchange server likely waits first mail timeout, and then try second one again. So very slowly and mail delay.... :(
By the way I also found out the above error in maillog at the same time, What's happened ?
1. I make sure those are bulk mails by virus as "email@example.com" & "nobody@www" (not existing)
2. Is it caused by sendmail itself (MailScanner installed in Redhat) ?
Help please ?