Quoting Joy Methew <ml4joy@xxxxxxxxx>: > 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".? Mail servers that are run by knowledgeable people are very picky about SMTP conversations. The first problem is that you helo'd with gmail.com .. Google knows which servers are gmail.com servers and which are not .. and you're not. I also expect that their mail servers are all using ehlo and not helo. I doubt that was the issue. The syntax error was most likely your "mail from" line. I believe the correct syntax would have been "mail from: <ml4joy@xxxxxxxxx>". Your sendmail server most likely does not have any such restrictions in place, and as such was willing to accept the less than standard syntax for the "mail from" statement. Your sendmail server does know how to form a proper SMTP conversation, which is why your sendmail server had no issue talking to the gmail servers. Barry -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
