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Valued Advisor
Valued Advisor

SMTP TLS issues with Microsoft since a week

Product Name: Other - specify product in post
Operating System: Not Applicable

Hi, lots of customers are calling in, many versalinks / altalinks are not mailing anymore with the setup like 587 , ttls if avaible (check on/off) auth enabled

"message failed to send"

if we setup mailprotection on port 25 , no issues

its related to TLS 1.2 i think

alreayd tried loading new SPAR firmwares on versalink/altalink, doesnt help


is this a know isse with microsoft in combination with xerox mfp smtp clients?