{"action":"opened","issue":{"url":"https://api.github.com/repos/rnwood/smtp4dev/issues/4","labels_url":"https://api.github.com/repos/rnwood/smtp4dev/issues/4/labels{/name}","comments_url":"https://api.github.com/repos/rnwood/smtp4dev/issues/4/comments","events_url":"https://api.github.com/repos/rnwood/smtp4dev/issues/4/events","html_url":"https://github.com/rnwood/smtp4dev/issues/4","id":121993949,"number":4,"title":"501 Parameter Not Recognised [Codeplex 9294]","user":{"login":"rnwood","id":1327895,"avatar_url":"https://avatars.githubusercontent.com/u/1327895?v=3","gravatar_id":"","url":"https://api.github.com/users/rnwood","html_url":"https://github.com/rnwood","followers_url":"https://api.github.com/users/rnwood/followers","following_url":"https://api.github.com/users/rnwood/following{/other_user}","gists_url":"https://api.github.com/users/rnwood/gists{/gist_id}","starred_url":"https://api.github.com/users/rnwood/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/rnwood/subscriptions","organizations_url":"https://api.github.com/users/rnwood/orgs","repos_url":"https://api.github.com/users/rnwood/repos","events_url":"https://api.github.com/users/rnwood/events{/privacy}","received_events_url":"https://api.github.com/users/rnwood/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-12-14T08:10:39Z","updated_at":"2015-12-14T08:10:39Z","closed_at":null,"body":"When receiving a message with the following MAIL FROM verb, a 501 Parameter not recognised message is returned.\r\n\r\n```\r\nMAIL FROM:disdtesthq1@mmhs.uk SIZE=5754 ENVID=X400-MTS-Identifier:+20[/PRMD+3dFirst+20Organizati/ADMD+3d+20/C+3dGB/;DC01-140416101643Z-98] RET=FULL\r\n```\r\n\r\nI have created an extension to handle the ENVID and RET parameters, however when the verb is parsed, the ENVID parameter is read in as \"ENVID=X400-MTS-Identifier\" and the remainder handled as an additional parameter. According to RFC 3461, ':' is a valid character for the ENVID parameter, however it is not treated as such."}}