> On 14 Jun 2019, at 14:24, klirstr <klir...@gmail.com> wrote:
>
> host smtp.customerdomain.com[customer-mx-server-ip] said: 450 4.7.1
> <u...@customerdomain.com>: Recipient address rejected:
> SPF-Result=smtp.mydomain.com: 'SERVFAIL' error on DNS 'TXT' lookup of
> 'smtp.mydomain.com' (in reply to RCPT TO command))
> u...@customerdomain.com
>
>
> I don't really understand the error but I tried to add an SPF record ("v=spf1
> mx -all") to my dns domain but it didn't solve the issue. So I am wondering
> about below.
>
> - Is the problem on my side or customer-side?
> - Is it because I cannot read the customer SPF record (they have one)
> properly?
> - Is there a way to "bypass" this error?
It’s impossible to answer your questions from the information provided. In
future, always show any log and error messages *verbatim*. None of this silly
obfuscation of domain names and IP addresses: customerdomain.com or whatever.
That helps no-one.
What would your reaction be if my answer was "the problem is xx xxxxx xxx
xxxxxx xxxx xx (details hidden for imaginary/misguided security reasons)"?
That said, the quoted error message suggests DNS lookups for smtp.mydomain.com
are returning SERVFAIL - which means DNS is very badly broken for that domain.
If you’d told us the actual domain name instead of hiding it, somebody could
have checked that and might well have been able to diagnose the fault.
