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Error: SMTP port 25 unrecognized, impossible to send messages from an email client
In order to be able to send emails nevertheless, you need to specify port no. 587 instead (or 2525 if 587 doesn't change anything).
Actions to be carried out
You just need to go to the account settings for your email address and change the port which is used by the SMTP protocol (outgoing mail). The default is 25 and you need to replace it with 587. This will enable you to use the SMTP authenticated mode for sending your email providing you with the full benefit of our email services.
Getting the error and changing the SMTP port in Outlook Express
For other programs, click here.
"573 Swisscom Antispam: Unauthenticated connection impossible. Please use the port 587 instead of port 25. More information: www.swisscom.ch/p25."
"An operation on the server timed out. The server may be down, overloaded, or there may be too much net traffic."
"The time limit has been exceeded" with the following error number (421 or 573 for example).
Please note that it isn't necessary to change the outgoing server name to smtpauth.bluewin.ch or make any other change!
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