Re: Requires valid sender domain?
- Evan Platt wrote:
> At 03:37 PM 12/1/2006, you wrote:If this address is not modified by relay, then the problem is probably
>> Evan Platt wrote:
>>> Not sure if this is postfix related at all...
>>> Mail is sent from my localcomputer to postfix, then via smtpauth to
>>> my DSL providers SMTP server:
>>> relayhost = smtp.dslextreme.com
>>> Sent a e-mail to a comcast user and got a e-mail bounce:
>>> 18.104.22.168 does not like recipient.
>>> Remote host said: 550 [PERMFAIL] comcast.net requires valid sender
>>> Giving up on 22.214.171.124.
>> and what is the sender address?
> Same as what I sent to the group, evan@...
at comcast side. seems like an access control check (would they block
domains with an MX at dyndns?)