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My ISP blocks port 25 but I want to use SMTP on my hosting server.

  • September 10, 2021
You can use port 465 instead.  To connect to that port, activate SSL in the email client.

Change the outgoing port number from 25 to 465 and select the checkbox "This server requires an encrypted SSL connection (SSL)".

For MS Outlook:

Tools > Email Accounts > View or change existing account

select the email account and press Change button

Click on More Settings...

Click on Outgoing Server tab

select "My outgoing server (SMTP) requires authentication"

and keep (o) Use same settings as my incoming mail server

Click on Advanced tab

under Outgoing server (SMTP)

select "This server requires an encrypted connection (SSL)

and change 25 to 465 in front of it.

Press OK and save those settings.

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