You’ll need to contact your VPN provider for the information they require to whitelist your outgoing email. Webmail uses port 2095 (insecure) or 2096 (secure / SSL) in your browser along with port 80 (insecure) or 443 (secure). Your email app uses different ports which your VPN can allow or deny within it’s network firewall. It’s the same reason we recommend customers follow our article for strengthening overall email authentication and recommend VPS Hosting customers create an IP address pointer (PTR) record. Such activities result in VPN providers’ IP’s being blacklisted and hurt their service quality. VPN providers want to prevent malicious users from using their services and IP addresses to send spam and other unsolicited types of emails. The reason for this is simple – security. If your network and firewall aren’t blocking email ports – SMTP (25), POP3 (110 and 995), and IMAP (143 and 993) – it’s likely your VPN restricting your ability to send emails via Outlook, Thunderbird, Apple Mail, etc. There are no issues receiving email in your email app or sending email in Webmail. You can do everything else on the internet. You’re trying to clean up your inbox but your email responses don’t send – they sit in your outbox. You’re at home or in your favorite lounge with your virtual private network (VPN) application enabled because you’re connected to an open public network. Many privacy-conscious users have been there.
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December 2022
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