Member Avatar for nuga01

helllo sir, am astudent of olabisi onabanjo university i am facing problems on smtp and tcp am facing problem in running my business while still at school .............please refer me to any end solution about this... pleaese i need a lasting solution to this

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Dani AI

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As is trying to send mail from a campus machine, two practical causes should be checked first: the network may be blocking outbound SMTP, or the mail client is not using the modern submission/auth + TLS settings mail providers expect. was right that a locked-down network is a common reason.

Quick diagnostic steps you can run from the machine to see what is blocked or reachable:

# plain TCP test (may time out if blocked)
telnet smtp.example.com 25
telnet smtp.example.com 587

# STARTTLS-capable test (shows TLS handshake)
openssl s_client -starttls smtp -crlf -connect smtp.example.com:587

On Windows you can also use PowerShell:

Test-NetConnection -ComputerName smtp.example.com -Port 587

If connections to port 25 time out but 587/465 succeed, configure your client for SMTP submission: outgoing server = your provider, port = 587 (STARTTLS) or 465 (SSL/TLS), and enable SMTP authentication with your full username and password. If the client (older PC-Pine builds) cannot do STARTTLS or auth, switch to a client that does (Alpine/Thunderbird) or use your provider's webmail.

If the campus blocks all SMTP ports and IT will not open a relay, two options remain: use a trusted VPN that permits SMTP, or create an SSH local tunnel to a VPS you control and forward a local port to the provider’s SMTP port. Example SSH tunnel:

ssh -L 11587:smtp.example.com:587 user@your-vps.example.com -N
# then point your mail client at localhost:11587

Only use tunneling if it does not violate campus policy. For the official submission port and TLS guidance see RFC 6409 and RFC 8314. For SSH port forwarding details see the ssh manual.

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Member Avatar for Suspishio

We need a llot more information than you are providing. As a guess based on what you have said, you can log on to the university network but it won't let you connect via what (Outlook?) to your chosen SMTP mail provider. Sounds like they've got their network fairly locked down or they've blacklisted/firewalled off the URL of your mail provider. Noting you can do about that IMHO apart from some complex tunnelling.

Member Avatar for nuga01

thanks for putting me through, I have an email but I need somebody to help me configure smtp and tcp i have email software like pc pine already but i need to make it work by somebody solving this configuration problem

Member Avatar for nuga01

please what are the complex way i can do to get that or can you help me in configuring my pc pine then i can pay for the service or you know any software you can get for me on that, that will work perfectly and you will do the configuration for me. please I need your respond

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