On 07/09/2012 03:37 PM, roland wrote: > I suppose that if one uses the ESMTP option, one has to install esmtp and > configure > it as needed. > as discribed in : > http://www.techrepublic.com/blog/opensource/send-mail-with-esmtp-for-a-simple-single-user-system/232 > > How do you tell sendmail to use esmtp as the email deliverer? > > I dropped that line and used a authinfo file as described above and it > worked. > Probably is esmtp a simpler way to do it for different users and different > domains?
Ahhh.... SMTP=Simple Mail Transfer Protocol ESMTP=Extended Simple Mail Transfer Protocol ESMTP added a framework to SMTP to add additional commands into the SMTP protocol to extend the usefulness. You can see what extensions are currently supported by your version your sendmail, or any MTA, by issuing the ehlo command instead of the helo command. [egreshko@f17 ~]$ telnet localhost 25 Trying 127.0.0.1... Connected to localhost. Escape character is '^]'. 220 f17.greshko.com ESMTP Sendmail 8.14.5/8.14.5; Mon, 9 Jul 2012 16:09:07 +0800 helo f17.greshko.com 250 f17.greshko.com Hello localhost [127.0.0.1], pleased to meet you as opposed to [egreshko@f17 ~]$ telnet localhost 25 Trying 127.0.0.1... Connected to localhost. Escape character is '^]'. 220 f17.greshko.com ESMTP Sendmail 8.14.5/8.14.5; Mon, 9 Jul 2012 16:06:45 +0800 ehlo f17.greshko.com 250-f17.greshko.com Hello localhost [127.0.0.1], pleased to meet you 250-ENHANCEDSTATUSCODES 250-PIPELINING 250-8BITMIME 250-SIZE 250-DSN 250-ETRN 250-AUTH GSSAPI DIGEST-MD5 CRAM-MD5 250-DELIVERBY 250 HELP Port 587 and AUTH are 2 different things.... Port 587 is SMTP or ESMTP over SSL. The connection is secured by SSL in the same manner as HTTPS. HTTP uses port 80 while HTTPS uses 443. But the underlying protocol is the same. Same goes here. AUTH is part of ESMTP and defined in rfc4954. It is an Authentication mechanism and is available via non encrypted (port 25) or encrypted (port 587) connections to the MTA. I don't know if that clears anything up for you..... -- Never be afraid to laugh at yourself, after all, you could be missing out on the joke of the century. -- Dame Edna Everage -- users mailing list users@lists.fedoraproject.org To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
