Okay, thanks Vukko, I'll give this a spin. I suspect, tho, that that link will be all I get, and that's where I've gotten lost before. That is, instead of "not gonna let you send to that group because X" I'll get the "check out our generic page of links that might be helpful if you get lucky". :/
Do I sound jaded? lol On Sunday, November 30, 2014 9:57:47 AM UTC-6, vukko wrote: > > Hey William > > On Sun, Nov 30, 2014 at 4:39 AM, William T <[email protected] > <javascript:>> wrote: > >> In trying to sniff a successful standard Gmail SMTP connection, all >> traffic is encrypted. STARTTLS is the first command of any transmission. Is >> there a trick to be able to use telnet or SSH to diagnose a Gmail >> connection somehow? >> > > No, just telnet to the MX server on the standard SMTP port TCP/25 like so: > > $ telnet ASPMX.L.GOOGLE.COM. 25 > Trying 173.194.78.26... > Connected to ASPMX.L.GOOGLE.COM. > Escape character is '^]'. > 220 mx.google.com ESMTP hn8si26075071wjb.124 - gsmtp > ehlo > server.somedomain > 250-mx.google.com at your service, [ > > 80.68.92.173] > 250-SIZE 35882577 > 250-8BITMIME > 250-STARTTLS > 250-ENHANCEDSTATUSCODES > 250-PIPELINING > 250-CHUNKING > 250 SMTPUTF8 > mail from: <m > e@somedomain > > > 250 2.1.0 OK hn8si26075071wjb.124 - gsmtp > rcpt to: < > recipient@googlegroup > > > 250 2.1.5 OK hn8si26075071wjb.124 - gsmtp > data > 354 Go ahead hn8si26075071wjb.124 - gsmtp > Subject: test > > Testing 123 > . > 550-5.7.1 [80.68.92.173 12] Our system has detected that this message > is > 550-5.7.1 likely unsolicited mail. To reduce the amount of spam sent to > Gmail, > 550-5.7.1 this message has been blocked. Please visit > 550-5.7.1 > > http://support.google.com/mail/bin/answer.py?hl=en&answer=188131 for > 550 5.7.1 more information. hn8si26075071wjb.124 - gsmtp > Connection closed by foreign host. > > > > The black text is what I typed, green text is what is returned. > > In the above case you can see that the Google MX rejected my message, I > suspect because my ehlo statement contained an invalid FQDN and/or I did > not send full headers. In my test the envelope headers were valid sender > and recipient addresses. > > >> Our SPF record does have the IP address of the sending website >> (ip4:#.#.#.#) plus the CNAME (a:blah.com) of the website as well. (For >> the domain the A records point to our website which is what's generating >> the emails, and the MX records are pointing to Gmail, which won't forward >> emails to members of the group. Dang confusing!) >> > > I performed this test from my own VPS which has a valid PTR record, does > the IP address of your website server host have a valid PTR? Is this a > shared website host? Perhaps the IP address has been blacklisted. > Is whatever application you are sending from using a valid, reply-able > From: header? > > >> Any pointers on *HOW TO DIAGNOSE WHY GMAIL IS BOUNCING INTERNAL EMAILS >> TO INTERNAL GMAIL GROUPS* would be very thoroughly appreciated. >> > > That depends on how you define 'internal'. You are sending mail from a > external (to Google) hosted server to a Google Group. > > Do have a look at the guidelines as per the link returned in my test > above. See https://support.google.com/mail/answer/81126?hl=en > > If I do the same test using a valid information, the email is accepted: > > $ telnet ASPMX.L.GOOGLE.COM. 25 > Trying 74.125.133.27... > Connected to ASPMX.L.GOOGLE.COM. > Escape character is '^]'. > 220 mx.google.com ESMTP d8si4359131wjy.80 - gsmtp > ehlo za.atnight.co.za > 250-mx.google.com at your service, [80.68.92.173] > 250-SIZE 35882577 > 250-8BITMIME > 250-STARTTLS > 250-ENHANCEDSTATUSCODES > 250-PIPELINING > 250-CHUNKING > 250 SMTPUTF8 > mail from: <marko@a_domain> > 250 2.1.0 OK d8si4359131wjy.80 - gsmtp > rcpt to: <marko@b_domain> > 250 2.1.5 OK d8si4359131wjy.80 - gsmtp > data > 354 Go ahead d8si4359131wjy.80 - gsmtp > From: Marko <marko@a_domain> > To: Marko <marko@b_domain> > Subject: only testing > > Hello there > > . > 250 2.0.0 OK 1417362621 d8si4359131wjy.80 - gsmtp > quit > 221 2.0.0 closing connection d8si4359131wjy.80 - gsmtp > Connection closed by foreign host. > > > a_domain is a valid domain that I own and b_domain also a valid domain > that is on Google MX. > > -- > Marko > > -- You received this message because you are subscribed to the Google Groups "Gmail-Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/gmail-users. For more options, visit https://groups.google.com/d/optout.
