diff --git a/src/com/fsck/k9/mail/transport/SmtpTransport.java b/src/com/fsck/k9/mail/transport/SmtpTransport.java
index 56c5f069c..2d89b9734 100644
--- a/src/com/fsck/k9/mail/transport/SmtpTransport.java
+++ b/src/com/fsck/k9/mail/transport/SmtpTransport.java
@@ -77,7 +77,7 @@ public class SmtpTransport extends Transport {
         String scheme = smtpUri.getScheme();
         if (scheme.equals("smtp")) {
             connectionSecurity = ConnectionSecurity.NONE;
-            port = 25;
+            port = 587;
         } else if (scheme.equals("smtp+tls")) {
             connectionSecurity = ConnectionSecurity.STARTTLS_OPTIONAL;
             port = 587;