Hello to everyone, I'm new at this list so I hope to write in the right way my question.
I have the following situation: I try to send a mail to u...@domain.tld. If I manually ask for the MX records of DOMAIN.TLD I get: MX 20 MAILSERVER1 MX 30 MAILSERVER2 MX 40 MAILSERVER3 The MAILSERVER1 has graylist so Postfix tries to send the mail and: 450 4.2.0 <u...@domain.tld>: Recipient address rejected: Greylisted for 300 seconds (in reply to RCPT TO command) And now the "problems" start: Postfix tries then to connect to MAILSERVER2, but this server is down. Postfix tries then to connect to MAILSERVER3 and here the owner has a bad configuration and I get 554 5.7.1 <u...@domain.tld>: Relay access denied (in reply to RCPT TO command) Result: my mail is removed from the queue and I get an undeliverable mail message. But I try to send another mail the MAILSERVER1 take it in the right way due to 300 seconds are elapsed. I have fix the problem setting Postfix to forward the mail for DOMAIN.TLD to MAILSERVER1 and now it works. However I ask you if exists any entry to tell Postfix to retry to connect to MAILSERVER1 after a while after a 450 response before to try to connect to the others mail servers. Thank you in advance Andrea
