First thing I would do is try to narrow down and figure out if it is
actually an smtp over frame-relay type problem. Try downloading larger
files over the links in both directions using FTP or just regular file
copying in Microsoft networking... If it shows the same symptoms as the
mail traffic then you can somewhate rule out it being a problem with your
email servers... If it doesn't show the same symptoms than you've at
least narrowed it down and verified that it probably is a problem with
either the mail servers or the smtp type traffic. After that, good luck...
Cory
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: Friday, September 29, 2000 6:38 AM
To: [EMAIL PROTECTED]
Subject: SMTP troubleshooting
Hey all,
Am studying CIT related material and am wondering what one would look for
when troubleshooting SMTP data transfer over an FR circuit, say at 128K
CIR, 256 port speed.
Situation:
Corporate site has 3600 class router with a serial interface configured
with T1 port speed and only 256K CIR. One remote site of 11 has 2500 class
router configured with 256K port speed/128K CIR. SMTP servers exist at
both sites. SMTP server at remote does not receive Internet e-mail, it
relies on corporate site SMTP server to supply Internet and corporate wide
mail.
Problem:
Clients at remote site cannot send mail with attachments larger than 1 MB
without 'timing out'. They can, however, receive mail with large
attachments from the Internet and corporate. Remote FR circuit tests clean
with no FECN or BECNs to report.
Any suggestions on approaches to this problem? Need more info?
Thank you,
Raul De La Garza III
CCNA NNCSS MCSE CNE
Senior Network Engineer
EmCare Incorporated
Brave men are all vertebrates: they have their softness on the surface and
their toughness in the middle. ?G.K. Chesterton
**NOTE: New CCNA/CCDA List has been formed. For more information go to
http://www.groupstudy.com/list/Associates.html
_________________________________
UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html
FAQ, list archives, and subscription info: http://www.groupstudy.com
Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
**NOTE: New CCNA/CCDA List has been formed. For more information go to
http://www.groupstudy.com/list/Associates.html
_________________________________
UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html
FAQ, list archives, and subscription info: http://www.groupstudy.com
Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
