Hi Just joined community - have been a TPG customer for 30 years. PROBLEM - Have phoned TPG 4 or 5 times over the past month and they cannot find the cause of issue. ISSUE - cannot SEND EMAIL FROM IPHONE When trying to send email I get the following message - CANNOT SEND MAIL The server rejected one of the recipients addresses. This message has been placed in your outbox. Misc Info - -TPG imap a/c -iphone SE2 with latest ios 15 installed - icloud email works OK -* last call to TPG a very rude lady said it was a Apple issue. -I have taken phone to Apple store and could not find any problems with Iphone. -Apple deleted TPG email a/c and reinstalled a/c but no difference. - Can RECEIVE EMAIL on iphone. - TPG postoffice OK - can send and receive. - TPG have checked and rechecked all incoming & outgoing settings and said correct.   Can ANYONE SUGGEST - What I should do Next? thanks         ... View more