On 3/10/07, Darren Spruell <[EMAIL PROTECTED]> wrote:
On 3/10/07, Philip Guenther <[EMAIL PROTECTED]> wrote:
...
> They (the text in SMTP responses) won't show up in the headers, but > they may show up in the body of DSNs or bounces generated by the > client. Yes, that can happen even when the response is a 4xy > temporary failure if the client has hit its "report delay" timeout or > "give up completely" timeout for delivery attempts. That won't occur > under normal circumstances with normal timeouts, but let's imagine > that connectivity to your mailserver was disrupted for a day ("backhoe > induced fadeout?"); clients may hit their "delay" timeout right after > their first chance to connect to you. Unlikely, but possible.I'm referring to the HELO/EHLO, RCPT TO, and MAIL FROM verbs. Under no circumstances I'm aware of will you see the output of these verbs in a bounce message. Is this not so?
Don't read many bounces, eh? Bounce messages *normally* contain the complete output from the last command sent for a recipient on the most recent delivery attempt. That is, if the delivery attempt failed (or was delayed past the delay timeout) by a 4xy or 5xy response to the MAIL FROM, the complete text of that response will be included in the bounce message. Ditto for RCPT TO, and I would expect the same of HELO/EHLO. For example, here's the text/plain part from the top of a random joe-job bounce spam from my quarantine... ---- The original message was received at Mon, 19 Feb 2007 06:04:48 -0600 from XXX.YYY.com [##.##.##.##] ----- The following addresses had permanent fatal errors ----- 550 User account is over quota. Mailbox full. (reason: 550 5.1.1 User unknown) (expanded from: <[EMAIL PROTECTED]>) ----- Transcript of session follows ----- 550 5.1.1 550 User account is over quota. Mailbox full.... User unknown ---- That sure looks like a response from a RCPT TO command to me. I vaguely recall seeing the text of the *successful* commands before a failed RCPT on occasion too, though I may be confusing that with how MH handled failed submission attempts... Philip Guenther
