Level 1: Cadet


I am unable to send Optus emails from Telstra Wifi

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Level 21: Augmented

Re: Emails

That's quite possible - most ISP do not allow using their SMTP servers (outgoing e-mail) from other networks than their own... That is presuming you want to use client like Outlook etc. It should work using web interface.
DISCLAIMER: I do not work for Telstra or any other ISP. I never did. I have wealth of practical knowledge in Computer Security and Forensic Computing. I have been in the field since 1985.

Likes (formerly Kudos) and solutions are appreciated!!!
The comments expressed by me reflect my user experience and personal opinion.
Level 24: Supreme Being
Level 24: Supreme Being

Re: Emails

Are you using secured outgoing settings on port 465 or 587, or using port 25?

Port 25 is reserved by RSP's for their own mailserver, so sending from an optus mailserver on port 25 using a telstra connection will definitely fail, same as sending from a bigpond mailserver on 25 using an optus connection will fail

Generally using authentication and encryption on port 465 or 587 will work, provided the RSP that owns your mailserver is capable of it. I cant seem to find anything online about Optus using a port other than 25. In which case you would need to use on port 25 unauthenticated and un-encrypted while on a telstra internet connection, and change it back to Optus outgoing settings when you're not (not recommended due to no encryption). Alternatively use webmail as FG has advised

I am a Complex Customer Service Specialist, nominally working with most assurance products. However, I am not an official representative on CrowdSupport.

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