[Gllug] FQDN for local mail relay?

[Garry Heaton]

Mike Brodbelt wrote:

> The problem here is that despite your mail being tehnically OK, spam is 
> now so problematic that there are a lot of people who'll reject mail with
> dubious domains in "From" headers.
> 
> IMHO, the best option these days is to have a machine with a public IP 
> and correct forward and reverse DNS. Send mail direct, and then make sure
> your machine announces the correct DNS name in the HELO/EHLO stage of the
> SMTP/ESMTP transaction.
> 
> Failing that, if you have to relay, make sure your MTA rewrites the 
> "From" header and the envelope sender address to a genuine, deliverable 
> email address at your domain. That should also work. Do a packet trace 
> when you're sending an outbound email so you can see the entire SMTP 
> conversation - that way it'll be obvious if something isn't being 
> rewritten properly.
> 
> Mike
> 

Thanks, Mike. You really hit the nail on the head. I'll set about rewriting
the headers. What tool do you recommend for packet tracing?

Garry
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