>> Postfix looks up
>> ALL the A records for ALL the MX hosts BEFORE it begins delivery.
>>
>> If at least ONE A record is available, then Postfix simply ignores
>> MX hosts without A record.
>
>Winfried Truemper:
>> That seems to be a contradiction to what our users report. I will try
>> to do more research on this issue, but that will take a week or so.
>
>Well, that's how Postfix works.

I suspect you are both almost, but not quite, understanding what the
other is saying.

What is _suspect_ is happening is that the host has MX records, but no
valid corresponding A records: in this case, I think sendmail queues,
whereas postfix bounces.

Personally, I like sendmail's behaviour better - my sendmail queues
used to be clagged with mail to dopey sites broken in this way (and it
didn't require many). But maybe it needs to be switchable.

 ---
Andrew McNamara (System Architect)

connect.com.au Pty Ltd
Lvl 3, 213 Miller St, North Sydney, NSW 2060, Australia
Phone: +61 2 9409 2117, Fax: +61 2 9409 2111

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