hello again Todd and everyone who has recently helped and advised me,
Just a little update for you to consider/react to where relevant. My new
replies here are prefixed with *:
Todd Olson wrote:
>>BTW if you manually send mail to list-admin @
>from your personal account, does it get there?
>>* Yes, that's fine; it's a genuine mailbox address which I can and do
>>>>He (Mailgust developer) has confirmed that the current mailgust
'bodge' in SMTP is indeed to return bounces to the list
>>so no more guessing needd on this one.
* Further, I have discovered from him that the same thing happens
regardless of whether mailgust is set to send using SMTP
or the sendmail binary. This would still not explain my original
problem though, where using sendmail on a colleague's
domain was causing bounces to go to the original email poster. Along
the lines that you and others have tried to tell me,
I think Chuck (developer) has said this depends on whether the host's
mail server is set to recognise use of the -f option
as included / offered in the Mailgust coding. We are currently trying
to get the host to answer this question:
"Is it allowed to call sendmail from a PHP script using the following
format: /usr/sbin/sendmail -i -f sender @
(I am currently unclear as to what -i does)
Good news though; Chuck has told me/us how to change Mailgust's
zmail.php file to successfully allow the Return-Path:
to be defined as a desired address other than the list address, which
indeed appears to work and appear in the headers,
presumably subject to whether -f is allowed on the specific mail server:
from zmail.php: (** used here to highlight the new line, apologies for
some line wrap corruption)
$vdate=date('D, j M Y H:i:s O');
**$retpath= "list-owner @
My understanding is this
SMTP is the protocol. Stands for Simple Mail Transfer Protocol.
Sendmail is a program. It speaks SMTP amoung other things and can route
one place to another.
Similar programs are postfix, qmail, exim
I'm quite confused about what you are calling 'SMTP' ... since you
indicate you are not talking about the protocol.
Have you any pointers to what you are talking about so we can get on
the same page?
* yes, this is my lack of understanding here. I think these are my
1) When Mailgust sends mail using its setting to use the
sendmail/postfix/qmail/exim binary, mailgust is calling that binary
on the host machine by means of a php file. This may or may not be
subject to remailing restrictions dependent on how the
host has set things up. The binary is indeed part of the outgoing mail
server itself, which then sends the mail(s) on to
the recipient using an SMTP protocol connection.
2) When Mailgust sends mail using its setting to use an available SMTP
server, mailgust is using an SMTP protocol to reach
that mail server much like an email client would. This may or may not
be subject to remailing restrictions dependent on how
that host has set up the mail server. That server then sends the
mail(s) on to the recipient using an SMTP protocol
As far as I currently understand, the possible advantages of 1) over 2)
above may be:
a) A faster connection resulting in swifter mail delivery. I appreciate
that any ultimate mail delivery is dependent on the
processing performance of the recipient POP server.
b) It may be a way to avoid SMTP remailing restrictions imposed by a
mail server's host.
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even bigger hits, pop and dance - less fillers than ever before*