jakeyy wrote:
> Have a strange issue with IIS6 SMTP server, mail just sits in the queue.
> After a server reboot mail is forwared, but all new mail still sits in the
> queue.    The logs say the remote domain can't be found and sent mail is
> delayed.
>....

Are they really stuck or just queued because they have been delayed ? A
lot of stupid servers today use something called greylisting which
assumes that a spammer won't try and send an email twice so they reject
all emails once and expect legitimate servers to resend it.

That could be one reason your queue is getting full, check into your
resend intervals and when delay messages should be sent out (usually
not on first retry).

If it says the remote domain couldnt be found it's either invalid or
you have a DNS issue on your machine, pherhaps the DNS server is
unavailable at times, do you have a backup listed (ipconfig /all) ?

[ Post a follow-up to this message ]

"pblse2" wrote:

>
> jakeyy wrote: 
>
> Are they really stuck or just queued because they have been delayed ? A
> lot of stupid servers today use something called greylisting which
> assumes that a spammer won't try and send an email twice so they reject
> all emails once and expect legitimate servers to resend it.
>
> That could be one reason your queue is getting full, check into your
> resend intervals and when delay messages should be sent out (usually
> not on first retry).
>
> If it says the remote domain couldnt be found it's either invalid or
> you have a DNS issue on your machine, pherhaps the DNS server is
> unavailable at times, do you have a backup listed (ipconfig /all) ?
>
>

Hi pblse2
All email goes to one email address to our email server, so I doubt this is
due to anti spam or retry intervals.   There are two dns servers that we
monitor and always are up I even tried manually doing lookups just to make
sure it's not DNS.

All was fine, this just started happening.  First all email was forwarding
to the badmail folder, after a couple of reboots it started to get stuck in
both badmail and queue(it's not delayed it gets permanently stuck until I
look and delete it manually).   Just rebooted the server again, and all emai
l
is going trough ok for now,  pretty sure it's going to get stuck in the queu
e
shortly.     Only a small amount of emails are actually relayed trough IIS
smtp to our exchange account daily and the system is not overloaded.

[ Post a follow-up to this message ]

Have a strange issue with IIS6 SMTP server, mail just sits in the queue.
After a server reboot mail is forwared, but all new mail still sits in the
queue.    The logs say the remote domain can't be found and sent mail is
delayed.
Other times mail goes into the Badmail folder and I know those emails have
valid from and to addresses.  All mail is being sent trough our website on
same server using cdonts. After server is rebooted all seems ok for few hour
s
or/and all old mail is being sent from the queue and new email gets stuck in
the queue again?

[ Post a follow-up to this message ]

jakeyy wrote:
> Have a strange issue with IIS6 SMTP server, mail just sits in the queue.
> After a server reboot mail is forwared, but all new mail still sits in the
> queue.    The logs say the remote domain can't be found and sent mail is
> delayed.
>....

Are they really stuck or just queued because they have been delayed ? A
lot of stupid servers today use something called greylisting which
assumes that a spammer won't try and send an email twice so they reject
all emails once and expect legitimate servers to resend it.

That could be one reason your queue is getting full, check into your
resend intervals and when delay messages should be sent out (usually
not on first retry).

If it says the remote domain couldnt be found it's either invalid or
you have a DNS issue on your machine, pherhaps the DNS server is
unavailable at times, do you have a backup listed (ipconfig /all) ?

[ Post a follow-up to this message ]

"pblse2" wrote:

>
> jakeyy wrote: 
>
> Are they really stuck or just queued because they have been delayed ? A
> lot of stupid servers today use something called greylisting which
> assumes that a spammer won't try and send an email twice so they reject
> all emails once and expect legitimate servers to resend it.
>
> That could be one reason your queue is getting full, check into your
> resend intervals and when delay messages should be sent out (usually
> not on first retry).
>
> If it says the remote domain couldnt be found it's either invalid or
> you have a DNS issue on your machine, pherhaps the DNS server is
> unavailable at times, do you have a backup listed (ipconfig /all) ?
>
>

Hi pblse2
All email goes to one email address to our email server, so I doubt this is
due to anti spam or retry intervals.   There are two dns servers that we
monitor and always are up I even tried manually doing lookups just to make
sure it's not DNS.

All was fine, this just started happening.  First all email was forwarding
to the badmail folder, after a couple of reboots it started to get stuck in
both badmail and queue(it's not delayed it gets permanently stuck until I
look and delete it manually).   Just rebooted the server again, and all emai
l
is going trough ok for now,  pretty sure it's going to get stuck in the queu
e
shortly.     Only a small amount of emails are actually relayed trough IIS
smtp to our exchange account daily and the system is not overloaded.

[ Post a follow-up to this message ]

Well, I don't know, seems a lot of people are having issues right now,
maybe somekind of attack.

Check your eventlog to see if you can find any errors or warnings that
might be related and change your smtp service logging so it logs as
much as possible.

[ Post a follow-up to this message ]

Well, I don't know, seems a lot of people are having issues right now,
maybe somekind of attack.

Check your eventlog to see if you can find any errors or warnings that
might be related and change your smtp service logging so it logs as
much as possible.

[ Post a follow-up to this message ]

hi
i want to install and configure smtp service on iis 6, i try to do that but 
nothing work good>
if any one can help me, please send me an email.
Thanks . . . .

From http://www.developmentnow.com/g/92_...elopmentnow.com

[ Post a follow-up to this message ]

hi
i want to install and configure smtp service on iis 6, i try to do that but 
nothing work good>
if any one can help me, please send me an email.
Thanks . . . .

From http://www.developmentnow.com/g/92_...elopmentnow.com

[ Post a follow-up to this message ]

Hi Jakeyy,

I have the exact same thing going on here!  At about 12:30PM EST, messages
just hang in the queue folder and are not delivered to the next hop.
Rebooting the server frees up the messages for delivery for a short time, bu
t
will eventually freeze again.  I've tried to send messages using telnet from
this IIS server to my next hop and even THESE freeze!  When I break the
telnet session, the message gets delivered (should not happen like this!)  I
f
I look at my next hop (Exchange 2003), I see SMTP cennections established,
but no transfer of messages occur.  I've turned up logging on both IIS and
Exchange servers and nothing appears in the event viewer.  Occaisonally I ge
t
a semaphore timeout or connection dropped by remote server (wouold expect
that after reaching timeout interval).  Just like you, this JUST started
happening about 3 days ago.

I have a call into Microsoft.  If anything comes out of that call, I'll let
you know!

"jakeyy" wrote:

> Have a strange issue with IIS6 SMTP server, mail just sits in the queue.
> After a server reboot mail is forwared, but all new mail still sits in the
> queue.    The logs say the remote domain can't be found and sent mail is
> delayed.
> Other times mail goes into the Badmail folder and I know those emails have
> valid from and to addresses.  All mail is being sent trough our website on
> same server using cdonts. After server is rebooted all seems ok for few ho
urs
> or/and all old mail is being sent from the queue and new email gets stuck 
in
> the queue again?
>

[ Post a follow-up to this message ]