[cobalt-users] Sendmail problems or Outlook?

[Glenn Parsons <gparsons@xxxxxxxxxxxxx>]

Hello All,

I know that a lot has been discussed about the issues between Outlook and 
Sendmail handshakes.

I have a client complaining about frequently not being able to send mail 
and I'm seeing this show up in my logs:

May 12 10:52:26 mail in.qpopper[13327]: (null) at 
xxx-xxx-xxx-xxx.client.net (xxx.xxx.xxx.xxx): -ERR POP EOF or I/O Error
May 12 10:52:26 mail in.qpopper[13327]: I/O error flushing output to 
client  at xxx-xxx-xxx-xxx.client.net [xxx.xxx.xxx.xxx]: Operation not 
permitted (1)
May 12 10:52:26 mail in.qpopper[13327]: I/O error flushing output to 
client  at xxx-xxx-xxx-xxx.client.net [xxx.xxx.xxx.xxx]: Operation not 
permitted (1)

Is there something I can do to correct this? Is there something I can 
advise the customer (other than to ditch the M$ email client?

Thanks,
Glenn