cancel
Showing results for 
Search instead for 
Did you mean: 

Problems sending emails - blocked smtp port

Anonymous
Not applicable

I am on PAYG with an iPhone 5C.  

 

I can receive emails but cannot send via smtp.interdns.co.uk unless on wifi.  I have tried various ports, 25, 2525, and 587.

 

smtp.o2.uk on port 25 works occasionally.

 

any thoughts?  Any other ports to suggest?  

 

Am really fed up of the situation and going to move to another network if I can't get this sorted.

 

Message 1 of 4
1,761 Views
1 ACCEPTED SOLUTION

Accepted Solutions

MI5
Level 94: Supreme
  • 143403 Posts
  • 632 Topics
  • 27489 Solutions
Registered:
If using O2's smtp you need to untick use ssl and any other security verification as it doesn't use any.
If your providers smtp is blocked you need to speak to CS http://www.o2.co.uk/contactus
I have no affiliation whatsoever with O2 or any subsidiary companies. Comments posted are entirely of my own opinion. This is not Customer Service so we are unable to help with account specific issues.

Currently using:
Pixel 7a (O2 & Lyca), One Plus 6 (Sfr), iPhone 12 Pro Max (Vodafone)

View solution in original post

Message 2 of 4
1,756 Views
3 REPLIES 3

MI5
Level 94: Supreme
  • 143403 Posts
  • 632 Topics
  • 27489 Solutions
Registered:
If using O2's smtp you need to untick use ssl and any other security verification as it doesn't use any.
If your providers smtp is blocked you need to speak to CS http://www.o2.co.uk/contactus
I have no affiliation whatsoever with O2 or any subsidiary companies. Comments posted are entirely of my own opinion. This is not Customer Service so we are unable to help with account specific issues.

Currently using:
Pixel 7a (O2 & Lyca), One Plus 6 (Sfr), iPhone 12 Pro Max (Vodafone)
Message 2 of 4
1,757 Views

Anonymous
Not applicable
Thanks.

On o2's symptoms the ssl is unticked.
My provider's smtp is blocked - or was. I managed to send email using port 587, but that wasn't working a couple of days ago.
Message 3 of 4
1,748 Views

MI5
Level 94: Supreme
  • 143403 Posts
  • 632 Topics
  • 27489 Solutions
Registered:
I use 465 with my Virgin email over O2's network OK.
I have no affiliation whatsoever with O2 or any subsidiary companies. Comments posted are entirely of my own opinion. This is not Customer Service so we are unable to help with account specific issues.

Currently using:
Pixel 7a (O2 & Lyca), One Plus 6 (Sfr), iPhone 12 Pro Max (Vodafone)
Message 4 of 4
1,737 Views