Knowledgebase

The bounced back message below is received by the sender. "Sender verify failed"To prevent...

Some emails will fall in Spam folder due to spam-trigger words detected or some other criteria....

There are two protocols that is frequently in use to retrieve email contents, which is POP3 and...

DNSBL is a blocking list that keeps a record of specific IP address/network with spamming...

Spamming activity happens when user's email password is stolen and being used by hackers/spammers...

Autoban is a security feature provided by the mail server for Windows-based hosting.The purpose...

If your email is blaklisted by Yahoo, users will receive the following bounced back...

Emails sent out of our mail servers are capped at a certain size.For Windows server, the maximum...

Email contents from old server cannot be migrated to new server especially if both servers are...

https://help.yahoo.com/kb/smtp-error-codes-sln23996.html

Spam mails, also known as junk mails, are unsolicited mails sent in bulks. It is a form of...

Every mail server may apply different spam filtering mechanism to filter out junk mails from...

Mailing list is a feature to allow users to forward mails to multiple recipients within the same...

When configure IMAP on an Iphone IOS device, you will get the follow error when trying to delete...