https://community.hpe.com/t5/operating-system-linux/sendmail-error/m-p/3738174#M21969 I think that this error is because the connection was dropped before the SMTP transaction finish. It should be a network problem or somebody is scanning your server ports. Thu, 23 Feb 2006 12:43:48 GMT Ivan Ferreira 2006-02-23T12:43:48Z https://community.hpe.com/t5/operating-system-linux/sendmail-error/m-p/3738173#M21968 All, <BR />I am getting this error:<BR /><BR />Feb 22 05:52:08 myserver sendmail[27601]: k1MAg8L27601: collect: premature EOM: Error 0<BR />Feb 22 05:52:08 myserver sendmail[27601]: k1MAg8L27601: collect: unexpected close on connection from <BR /><BR />I don't know if this is a sendmail issue or TCP/IP issue. Any idea? Thanks. Thu, 23 Feb 2006 11:11:35 GMT https://community.hpe.com/t5/operating-system-linux/sendmail-error/m-p/3738173#M21968 K.C. Chan 2006-02-23T11:11:35Z https://community.hpe.com/t5/operating-system-linux/sendmail-error/m-p/3738174#M21969 I think that this error is because the connection was dropped before the SMTP transaction finish. It should be a network problem or somebody is scanning your server ports. Thu, 23 Feb 2006 12:43:48 GMT https://community.hpe.com/t5/operating-system-linux/sendmail-error/m-p/3738174#M21969 Ivan Ferreira 2006-02-23T12:43:48Z https://community.hpe.com/t5/operating-system-linux/sendmail-error/m-p/3738175#M21970 Scanning a the server ports produce this kind of error? I have not heard of this before. Please explain the technical reason why it behaves this way. Is there a work around for this, will setting iptables on the mail server help the situation? Thanks. Thu, 23 Feb 2006 15:28:24 GMT https://community.hpe.com/t5/operating-system-linux/sendmail-error/m-p/3738175#M21970 K.C. Chan 2006-02-23T15:28:24Z https://community.hpe.com/t5/operating-system-linux/sendmail-error/m-p/3738176#M21971 It's more probable that is a connectivity problem. <BR /><BR />Premature End Of Message means that the remote host started the SMTP transaction but did not finished correctly. It could happend if a large attachment (DATA) is sent and the connection is dropped.<BR /><BR />I said port scanning because they can connect to the port 25 and do not issue any SMTP command, but the message for this should be different, like "did not issue MAIL/EXP/VRFY.." Thu, 23 Feb 2006 16:20:36 GMT https://community.hpe.com/t5/operating-system-linux/sendmail-error/m-p/3738176#M21971 Ivan Ferreira 2006-02-23T16:20:36Z https://community.hpe.com/t5/operating-system-linux/sendmail-error/m-p/3738177#M21972 does your mailserver work? (e.g. accepts other mails?) Fri, 24 Feb 2006 08:52:09 GMT https://community.hpe.com/t5/operating-system-linux/sendmail-error/m-p/3738177#M21972 Vitaly Karasik_1 2006-02-24T08:52:09Z https://community.hpe.com/t5/operating-system-linux/sendmail-error/m-p/3738178#M21973 Hi Mr Chan<BR /><BR />The key here is collect: unexpected close on connection from <BR /><BR />The SMTP Service could have been stopped at the time of transfer. <BR /><BR />How big was the mail anyways as a HUGE mail could actually bring smtp down on a WEAK machine.<BR /><BR />Cheers<BR /> Fri, 24 Feb 2006 10:01:10 GMT https://community.hpe.com/t5/operating-system-linux/sendmail-error/m-p/3738178#M21973 Vipulinux 2006-02-24T10:01:10Z https://community.hpe.com/t5/operating-system-linux/sendmail-error/m-p/3738179#M21974 Vipulinux,<BR />I am nost sure what you mean weak mail server; I do not see it getting heavily loaded (cpu load wise). Sat, 25 Feb 2006 11:05:12 GMT https://community.hpe.com/t5/operating-system-linux/sendmail-error/m-p/3738179#M21974 K.C. Chan 2006-02-25T11:05:12Z