It was smtp_url. The definition in the mutt manual says smtp[s]://[user[:pass]@]host[:port]
and I guess I got it confused with http://user:pass@domain, so had smtp://me:p...@corp.com@smtp.office365.com:port but it should be smtp://m...@corp.com:p...@smtp.office365.com:port -- ... _._. ._ ._. . _._. ._. ___ .__ ._. . .__. ._ .. ._. Felix Finch: scarecrow repairman & wood chipper / fe...@crowfix.com GPG = E987 4493 C860 246C 3B1E 6477 7838 76E9 182E 8151 ITAR license #4933 I've found a solution to Fermat's Last Theorem but I see I've run out of room o