LJ,

I agree.  Looking at the email headers will show where the delays occur.  Over 
the years I have seen delays within the email system.  I have also observed 
where the delay is handing off to the email server.  Reading the email heads 
was helpful in figuring it out.

I also build a small two form system for monitoring email delays.  The first 
form was used to send an email that contained a GUID to our various outbound 
email addresses.  The email created record in the second form.  Workflow on the 
second form used the GUID to update the Status of the record on the first form. 
 There were escalation notifications on the first form that would send us an 
SMS if the record in the first form was not updated in 20 minutes.

Dave

From: Action Request System discussion list(ARSList) 
[mailto:[email protected]] On Behalf Of LJ LongWing
Sent: Tuesday, April 26, 2016 8:22 AM
To: [email protected]
Subject: Re: Email performance/SMTP relays

**
Dave,
The most important thing to figure out is where the delay is....do the emails 
sit in your 'outbox' for up to 12 hours, or do they leave your mail form in the 
normal timelines, and then simply take up to 12 hours to be delivered?  I have 
found in this type of situation that the delay is typically on the other end, 
not within Remedy.  Check that and if you find that it reaches your smtp server 
in 'normal' time, then takes up to 12 hours to be delivered...then the admins 
of that smtp server need to investigate where the delay is.

On Tue, Apr 26, 2016 at 5:18 AM, Dave Barber 
<[email protected]<mailto:[email protected]>> wrote:
**
All,
Experiencing performance problems on mail sending; some background ...
Server is running ITSM 7.6 Change management on a 7.5 Solaris server, Oracle at 
the back end.  General application performance is fine.
The server is making use of 2 outgoing mailboxes.
Mailbox 1 - used for system notifications, such as "This change requires your 
approval", etc.  connects to a "legacy" SMTP relay, up to a few thousand emails 
sent each day, runs fine.  Emails are picked up/sent within a minute or two.
Mailbox 2 - used for a custom notifications system (to notify customers of 
outages), similarly sends a couple of thousand emails per day.  Has been in 
active use since February this year.  As it is external emails it is using a 
"mass mail" SMTP relay designated for this purpose.
It is this second one that is having problems - emails take anything from 3 
minutes to 12 (!!) hours to be sent.
As far as I can see the basic configuration/polling is setup the same on both 
(2 minutes).
Any suggestions?  Would reducing the polling interval have a positive change?  
Or are there further configuration changes on the email engine itself that 
could improve performance?  Or am I just at the mercy of a sluggish SMTP relay?
(I've never had to investigate email performance problems!)
Regards
Dave
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