|
Home > Archive > IIS and SMTP > May 2004 > SMTP mail problem to hotmail, yahoo, etc...
You are viewing an archived Text-only version of the thread.
To view this thread in it's original format and/or if you want to reply to
this thread please [click here]
| Author |
SMTP mail problem to hotmail, yahoo, etc...
|
|
| Per Hagstrom 2004-05-12, 12:55 pm |
| I have a problem where a bunch of my outgoing emails end up in the Queue
folder.
Have one server using SMTP Virtual Server (Win2k).
If this server sends anything out directly by itself, usually all emails go
out fine.
If another internal server, which is allowed to relay through my SMTP
server, tries to send emails, they end up in the Queue folder, if the email
is addressed to some of these big well known addresses such hotmail, yahoo,
aol, etc... (most smaller ISP's are fine)
The logs are not much of any help either... (Event ID: 4000 ...server did
not respond to a connection attempt.)
I have now tried to replicate the problem using telnet sessions.
Telnet works fine directly from the SMTP server. Works fine directly from
the other internal server as well.
The only thing that comes in mind is when the first connection between the
other internal server and the SMTP server starts, the HELO responds Hello
[10.x.x.x].
Could that be the problem with all these ISP's trying to verify the
originating IP, which of course will fail the "mail-filter-rules" since it's
an internal IP?
It has been working before, but since the increase of SPAM I guess they are
trying to lock things down... ?
If so, what options do I have? (hope I don't have to have every single
server with it's own SMTP Virtual Server!? Would prefer to have it
centralized.)
Or could I be having other issues?
Thanks!
/ Per
|
|
|
|
|