18 Sep 09:00 UTC — mail round-trip checks failed for about 15m0s (3 checks). submission: dialing submission listener: dial tcp 127.0.0.1:587: connect: connection refused
18 Sep 00:40 UTC — mail round-trip checks failed for about 15m0s (1 checks). submission: dialing submission listener: dial tcp 127.0.0.1:587: connect: connection refused
9 Sep 12:05 UTC — mail round-trip checks failed for about 15m0s (1 checks). submission: dialing submission listener: dial tcp 127.0.0.1:587: connect: connection refused
5 Sep 12:16 UTC — mail round-trip checks failed for about 15m0s (1 checks). submission: greeting: read tcp 127.0.0.1:35442->127.0.0.1:587: read: connection reset by peer