here is two systems both are "mta" A and B with sendmail. A is mine and B is gmail mat. when i telnet my mta means A --->>telnet 127.0.0.1 25 helo hi mail from:root@xxxxxxxxx <from%3Aroot@xxxxxxxxx> rcpt to:ml4joy@xxxxxxxxx <to%3Aml4joy@xxxxxxxxx> i recived mail very easly. it means my mta "A" telnet indirectaly to gmail mta. but when i try to telnet directly to gmail mta its give error like. 220 mx.google.com ESMTP t26si1434066ele.4 helo gmail.com 250 mx.google.com at your service mail from:ml4joy@xxxxxxxxx <from%3Aml4joy@xxxxxxxxx> 555 5.5.2 Syntax error t26si1434066ele.4 Any idea why the "Syntax error".? Thanks -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list