I'm sorry but I fail to understand what value is your acid question bringing 
to the conversation.

FWIW, Mathus, the remote side is simply printing a 5xx one line message "not 
accepted" banner instead of the expected welcome 220 banner, not giving any 
explanation to why, then closing the tcp session, without postfix even getting 
a chance to say HELO!

However, the topic of this thread is: Can postfix retry a failed message, by 
attempting to retransmit using a different outgoing IP address of the machine 
it's running on?

 If I send a mail to the same destination using the old IP address, a regular 
smtp conversation takes place and email is accepted by the remote side!  

Thank you


> On aug. 10, 2017 at 1:38 p.m.,  <Matus UHLAR - fantomas 
> (mailto:uh...@fantomas.sk)>  wrote:
>  On 10.08.17 08:04, Mai Ling wrote:  >  My question is can postfix retry a 
> failed delivery using another smtp_bind_address than the first tried and 
> failed one? did you even read error messages you've got and searched the net 
> for answers?  >>  On aug. 9, 2017 at 5:10 p.m., wrote:  >>   >>  On 09.08.17 
> 17:00, Mai Ling wrote:  >  no, it's statically configured  >>  you need 
> proper FcRDNS - ask your new ISP to configure reverse DNS  >>  pointing to 
> something that already points to your new IP (your mail  >>  server name 
> probably) -- Matus UHLAR - fantomas, -- Matus UHLAR - fantomas, 
> uh...@fantomas.sk ; http://www.fantomas.sk/ Warning: I wish NOT to receive 
> e-mail advertising to this address. Varovanie: na tuto adresu chcem 
> NEDOSTAVAT akukolvek reklamnu postu. Eagles may soar, but weasels don't get 
> sucked into jet engines. 

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