Email problems

[cs]

Hope someone can shed some light on an email problem I am having.

I keep getting emails that are failing to send. I am not sure if the problem is IDNets end, or the receiving server (or even my mail client)

I am getting 'Undeliverable' messages from the mail server and the following is an example of one such message (except i have blanked out the address for obvious reasons)


>>>>>>>

Your message did not reach some or all of the intended recipients.

      Subject:   RE: Possible training dates.
      Sent:   14/08/2008 10:39

The following recipient(s) cannot be reached:

      'gbxxx@xxxx.co.uk' on 14/08/2008 10:39
            501 5.1.3 Bad recipient address syntax

      'rcahxxxxx@xxxx.co.uk' on 14/08/2008 10:39
            501 5.1.3 Bad recipient address syntax

      'dgrifxxxxx@xxxx.co.uk' on 14/08/2008 10:39
            501 5.1.3 Bad recipient address syntax

      'Philxxxx@xxxx.co.uk' on 14/08/2008 10:39
            501 5.1.3 Bad recipient address syntax

>>>>>

Now, all of these address are at the same domain (my employer). I know the addresses are good as I email them all about 20 times a week! They are only failing on occasion and most emails are going through ok.

Now I could believe that my work's mail server might be playing up, but no-one else in the company is having any problems and I just checked with IT and they say everything is working fine their end..(Yeah I know they always say that, but I do believe them this time). I also send a similar amount of emails from my Blackberry which goes through Vodafone's Smtp server (it is not a coporate BES connection) and I have never had a failed email even once.....


The email that was referenced in the message above was sent to about 15 people, all at the same domain and only 4 out of those failed to receive it.

Every time I get one of these messages, I just re-open from my sent items, re-send EXACTLY the same message and it goes through fine.

Any ideas anyone?

Many thanks
Chris

[Simon]

Is PlusNet in anyway involved, Chris?  I only ask, because I've been having trouble sending an email to a PlusNet user, not just from my IDNet account, but from several different email accounts and servers.

[Rik]

Failing which, I'd suggest talking to support, Chris, as this really needs to be dealt with more specifically than we can do in open forum.

This might help:

http://www.napolifirewall.com/NondeliverableReport.htm

[cs]

Thanks guys. No Plusnet is not involved in this. But if I find out any info I will let you know in case its a similar problem.

Rgs
Chris