Comcast and mail header errors?

[Ben Scott]

On 3/22/06, Bruce Dawson <jbd at codemeta.com> wrote:
>> http://www.sendmail.org/~gshapiro/8.10.Training/DaemonPortOptions.html
>>
>> Perhaps "Modifiers=h" is what is needed?
>
> Wow. What search string did you use to find that?

  Ah, I think "sendmail bind interface" is what finally got it.  I
tried a few variations before that.

> Thanks!

  You're welcome!

> Of course, given the description of 'b', how does sendmail know which
> interface to bind to when there's no incoming mail?!

  Yah, I kind of wondered about that myself.  My guesses would be:

"b - bind to interface through which mail has been received for
outgoing message" causes Sendmail to bind to the interface incoming
mail was received from (which is recorded in the queue control file),
but Sendmail would still use the default address (0.0.0.0) for
locally-originated mail.

"h - use name of interface for outgoing HELO command" would obviously
be influenced by "b".  In the absence of "b", and/or for
locally-originated mail, I guess "h" would cause Sendmail to either
(1) figure out the outgoing interface based on the destination MX, or
(2) use the host system's idea of the canonical host name.

  But yah, only the sources know for sure.  And I don't relish the
idea of looking at the Sendmail sources.  The config file is bad
enough.  :)

> Just gotta figure out how to get them from yum.

  I've wondered about that, too.  :)

-- Ben