Yahoo! JAPAN

2024/4/18 -Cause. Incorrect or missing PTR record of the sender's mail server. Resolution. Contact the server hoster or provider of the IP address in ...

2024/3/27 -Hello, So my company used to use mailchannel as relayhost, and just now, they not planned to continue the subscription, I already remove everything...

2024/3/26 -... Client host rejected: Access denied. I can usually get it to work by selecting a different iCloud SMTP server (why are there two?): Screenshot 2024-03-24 at ...

2024/2/19 -I've searched the forums but haven't found exactly this use-case. I'm trying to send an email to a domain, but it's being rejected by its MTA with the message.

2024/2/22 -When I send an e-mail to a specific address (from my outlook.it-address on smartphone/PC/tablet), I get this message: "mx1.24translate.com ha restituito ...

2024/4/4 -Symptom. When attempting to log in or search Connexion client with valid credentials, you receive the message "Transaction failed. Your host connection may have ...

2024/4/11 -The most common 554 5 7 1 messages. 554 5.7.1: Client host rejected: Access denied; 554 5.7.1: Service unavailable; Client host X.X.X.X blocked using zen.

2024/3/6 -I just checked and the IP address is indeed on the blocklist. Do I need to contact Microsoft?

2024/3/7 -1 : Client host rejected: Access denied; 554 5.7.1 : Service unavailable; Client host X.X.X.X blocked using zen.spamhaus.org; 554 5.7.1 : Relay access denied ...

2024/3/28 -25 Client host rejected: cannot find your hostname" and are accepted on multiple retries. We confirm the Host Names are properly configured for our IP ...