A Connection Timed Out error usually means the mailbox was connected with the wrong settings, most often the wrong port. For Mailforge and Infraforge mailboxes, use SMTP port 465 (SSL) or 587 and IMAP port 993, with the hosts from your exported CSV file. Ports 465 and 993 are supported for all Mailforge and Infraforge mailboxes, including Server V2. For the full settings, see Connect Mailforge and Infraforge mailboxes to other sending platforms.
Timeout errors: These can occur due to a slow internet connection, a low timeout value, too many simultaneous connections, or antivirus or firewall blocking outgoing traffic. Increasing the timeout value, reducing the number of simultaneous connections, and checking firewall and antivirus settings can help resolve these issues.
Disconnection errors: These may happen because of too many simultaneous connections to the SMTP server or a timeout on the email marketing software's side. SMTP allows up to 150 simultaneous connections per IP address on Mailforge and up to 2,000 on Infraforge. IMAP allows up to 500 connections per mailbox from the same IP address on both. Lowering the number of simultaneous connections and increasing the timeout value can mitigate these errors.
Repeated failed logins: If your software keeps retrying with a wrong or outdated password, the mail server blocks your IP address. 10 failed logins from the same IP within 10 minutes block it for 30 minutes, and the block doubles on each repeat, up to about 2 hours 46 minutes. This is the same on Mailforge and Infraforge. Correct the credentials, stop the retries and wait for the block to expire.