how to queue the rejected messages and resend it again later?

[sinux shen]

Hi there,

We sometime encountered some issues that our mail service provider block our outgoing email due to our external IP was not in their whitelist, and we got lot like this:
Jun 7 10:02:39 postal1 postfix/smtp[26960]: 23B3010080A: to=<***@example.com>, relay=example-com.mail.protection.outlook.com[207.46.163.247]:25, delay=7.4, delays=0.1/0/2.1/5.2, dsn=5.7.1, status=bounced (host example-com.mail.protection.outlook.com[207.46.163.247] said: 550 5.7.1 Service unavailable; Client host [4.15.160.226] blocked using FBLW15; To request removal from this list please forward this message to ***@messaging.microsoft.com (in reply to RCPT TO command))


currently, when this happened, we just lost these emails, is there any way that we can queue the email and resend them later?

Thanks
Sinux

[sinux shen]

Any one has the same requirement

Post by sinux shen
Hi there,
currently, when this happened, we just lost these emails, is there any way that we can queue the email and resend them later?
Thanks
Sinux