Email account login details on iPhone out of sync with BT email on PC

[Dan13]

"Cannot Send Mail" username or password for ... is incorrect on iPhone email account so message goes to Outbox but I can send same message on PC without any problem.

I changed password on both yesterday and am receiving messages on both.  Grateful for some help please.

[Dan13 · Accepted solution]

I've worked out that although I changed the password on iPhone, I omitted to also change it for SMTP Outgoing Server. Schoolboy error - problem solved!