Log onto incoming mail server (POP3): Your server does not support the connection encryption type you have specified. Outlook Errors due to Wrong Encryption / Port Combination But be aware, this SSL/TLS option may be removed in a future update. If STARTTLS over port 587 is not working for customers, try “SSL/TLS” over port 465. Port 465 will work with SSL however, it won’t work for TLS.Īlternate Port for Outgoing Server (SMTP) To promote the most secure protocol, we recommend port 587 with a TLS connection. If you must use port 25, select TLS as the encryption type to ensure a more secure connection. Port 25 will remain open to support existing customers, but it is not recommended as it is not secure by default and is widely blocked by major ISPs. To enable a more secure email hosting platform, Web Builder Email is phasing out port 25 connections for SMTP. These folders will remain on your Web Builder Email account, but Outlook will no longer attempt to sync them.
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